All really nice preamps, based on my experience with them, (and in researching the Gaylord). My thoughts on your list though:
Remote Control:
Only the Allnic comes with a remote control.
Do you really want to not have a remote?
(I'll be honest and state that I REALLY like having a remote for the volume control, and it is a must have at this point in my life. I can live without having a remote for most things, such as input selection, display brightness, etc., but for volume and muting it is a must have option, IMHO.)
I should also point out that the Lamm has dual volume controls, (rather than one volume control and a separate balance control), and while this is an elegant solution, not everyone, myself included, likes to use two volume controls.
Balanced?
Do you now, or in the future, wish to run a fully balanced system?
If so, the Lamm is not fully balanced, and nor is the Gaylord, (I believe).
(Again, only the Allnic is balanced, although I think the Audion has it as an option.)
I prefer to run a fully balanced system myself, (but that is merely a preference, and not a requirement of a good preamp, but it is something to consider).
These are all line stage preamps.
This means you'll need to buy a separate phono stage, (and given your list, it will need to be a reference grade unit, so make sure you have the money budgeted for that.)
(I too listen almost exclusively to vinyl, so I prefer having a full function preamp. One can always add a separate phono stage at a later point. But this definitely adds to your costs, as it means another box, and another high quality interconnect. Of course it does mean added flexibility, at added cost, which is a counterpoint to having a full function preamp.)
Customer Service:
Allnic and Audion are based out of the USA, which means service might be problematic, (especially Allnic, as it is in Korea).
Both Lamm and Gaylord are in the USA, which means customer service is usually easier to obtain.
(I KNOW Lamm is a great company, as I have owned the Lamm M2.1 monoblocks for a few years now, and I have communicated with them on a variety of subjects, and they have always been very helpful. But their products are very reliable, so I have not had an occasion to use their service department. Knock on wood!) ;-)
If it were me, (and it is not, as I am pretty happy with my Ayre K-1xe), but I think I would check out the Atma-sphere MP-1 Mk. 3.1. (It is a full function preamp, (i.e. it has phono section and a really great one too); it is a fully balanced design; and it now has a remote available.)
(FYI, this is choice is based on research, and not my auditioning, as I have not had an opportunity to actually listen to this unit. But it would be up at the top of my list to audition were I to fall into some money, (and a lot of it!), which I could use to upgrade my system. As you can tell, while I don't have the inclination or the funds to upgrade, at this point in time, I still have the curiosity as to what I would upgrade to, should the opportunity present itself.) ;-)
My thoughts on your list on anyway.
Good Luck in your search!
Remote Control:
Only the Allnic comes with a remote control.
Do you really want to not have a remote?
(I'll be honest and state that I REALLY like having a remote for the volume control, and it is a must have at this point in my life. I can live without having a remote for most things, such as input selection, display brightness, etc., but for volume and muting it is a must have option, IMHO.)
I should also point out that the Lamm has dual volume controls, (rather than one volume control and a separate balance control), and while this is an elegant solution, not everyone, myself included, likes to use two volume controls.
Balanced?
Do you now, or in the future, wish to run a fully balanced system?
If so, the Lamm is not fully balanced, and nor is the Gaylord, (I believe).
(Again, only the Allnic is balanced, although I think the Audion has it as an option.)
I prefer to run a fully balanced system myself, (but that is merely a preference, and not a requirement of a good preamp, but it is something to consider).
These are all line stage preamps.
This means you'll need to buy a separate phono stage, (and given your list, it will need to be a reference grade unit, so make sure you have the money budgeted for that.)
(I too listen almost exclusively to vinyl, so I prefer having a full function preamp. One can always add a separate phono stage at a later point. But this definitely adds to your costs, as it means another box, and another high quality interconnect. Of course it does mean added flexibility, at added cost, which is a counterpoint to having a full function preamp.)
Customer Service:
Allnic and Audion are based out of the USA, which means service might be problematic, (especially Allnic, as it is in Korea).
Both Lamm and Gaylord are in the USA, which means customer service is usually easier to obtain.
(I KNOW Lamm is a great company, as I have owned the Lamm M2.1 monoblocks for a few years now, and I have communicated with them on a variety of subjects, and they have always been very helpful. But their products are very reliable, so I have not had an occasion to use their service department. Knock on wood!) ;-)
If it were me, (and it is not, as I am pretty happy with my Ayre K-1xe), but I think I would check out the Atma-sphere MP-1 Mk. 3.1. (It is a full function preamp, (i.e. it has phono section and a really great one too); it is a fully balanced design; and it now has a remote available.)
(FYI, this is choice is based on research, and not my auditioning, as I have not had an opportunity to actually listen to this unit. But it would be up at the top of my list to audition were I to fall into some money, (and a lot of it!), which I could use to upgrade my system. As you can tell, while I don't have the inclination or the funds to upgrade, at this point in time, I still have the curiosity as to what I would upgrade to, should the opportunity present itself.) ;-)
My thoughts on your list on anyway.
Good Luck in your search!