Mono cartridge recommendation

I have gone through a lot of mono cartridges.  I think there is a strong consensus that using a true mono cartridge sounds better than using a mono switch.  I have done both and heard the difference. Endless discussion of the subject online if you do a search.   

Couple people mentioned the Miyajima Zero.  Nice cart but well over $2000.  Used to be around $1500 but they bumped the price way up over the last five years. I have some mixed feelings about this company but that is OT.   

I have a Miyajima Premium BE.  It is very nice but I don't think I would call it neutral.  I also have a Phasemation Mono which is equally good, (actually better IMO) just a bit less romantic sounding and more detailed.
A great place to start would be an Audio Technica AT 33 MONO.  Unless you are really serious about mono playback, this might be all the cart you need. It has a rich clear sound.   In your price range and taste, the Hana Mono,  VAS and Soundsmith would all be worth a look. I am looking at a wood body Grado next but these have a more lush presentation that might not be your idea of "neutral".  

There are lots of opinions on stylus profiles in relation to playing mono LPs. One side of that issue is addressed pretty well on the Miyajima website, but it is a bit one-sided.

@lewm  When I saw your comment about the issue of mono carts being "addressed pretty well" on the Miyajima website I thought that they must have finally spent a few yen and found an English speaking technical editor. Sad to say there is still the original incoherent blather such as:
"There are a lot of monaural LPs to excellent records such as classical music, jazz, a lock.
When I look for the LP of the excellent performance, monaural recording knows a thing more than the half.
And I want to come to listen to a monaural LP by a good sound.

There are people purchasing a monaural cartridge easily.
And there are people playing a monaural LP with an existing monaural cartridge and stereo cartridge.
The people feel a monaural LP like an old sound by the influence of the cartridge.
And an image is left as an old LP.
In fact, the monaural LP has better sound than the stereo LP.
The reason is simple.
It is natural that a sound is better than the stereo LP to put two signals in as for the monaural LP which installs one signal in one ditch."
For a company that sells the vast majority of its cartridges to the western world to be unwilling to provide information about their offerings in a understandable form is, IMO, inexcusable.  Tokyo is full of people who could correct this for less than the price of a mid range cartridge so it not a matter of ability or expense.

I know that some people find it amusing but to me it borders on contempt that they make so little effort to communicate in a meaningful way with their potential customers.
And don't get me started on their tacky little red velvet boxes!

Of the ones you listed, I would go with either the Hana or AT.  With Ortofon I would want a SPU, arm permitting.

I don't like the sound of the modern Ortofons.  Lot of people like the later carts like the 2m Black but it sounds too much like a CD to me.  SPU have a different sound that I prefer but I think they are all made for older original recordings with a 1 mil conical tip so not for everyone.  I like the Hana as well-I have a Hana EL that I like but never actually heard their mono.  Guessing it has the same general character.  
Audio Technica (like Hana) are good value for the price they charge.      Needless to say, this is all based on personal taste and prejudices.  I am sure that any of the carts from these three companies would be great.     I believe they are all true mono based on coil orientation.