Paradigm 3f, KEF reference 3, Monitor Audio PL300II


I've been auditioning speakers in the $15,000 range and am almost ready to decide.  My short list right now is the KEF Reference 3 and the Monitor Audio PL300II.  I'm planning to hear the Paradigm Persona 3f this weekend.  I've also heard speakers from B and W, Wilson, Wilson Benesch and Proac but none made the final cut.  I really expected to be blown away by the Proacs and, while they were very good, I prefer the KEF and Monitor Audio. Unless the Paradigm is even better, it will be a tough call. They both seem to have great imaging and soundstage, reasonable bass and pretty life like presentations.  We all know how hard it is to compare and contrast speakers, especially when there's a large time gap between listening sessions. The Monitor Audio dealer has offered to bring them to my house, set them up and let me live with them for a week at no cost. Sounds like a great offer but I don't want to accept if I'm leaning more towards the KEFs.  Any helpful advice would be appreciated.  
puli
(This constitutes an update in my search for replacements for my beloved Thiels CS3.6)

I want to thank Dave from Audio Doctor ("Audiotroy") for letting me listen to KEFs (3R) and Paradigms (Persona 3f) last night, mostly with the Naim Uniti Nova DAC/amp. There aren't many places where you can try a lot of great brands (including schlepping heavy speakers around) in a relaxed environment, and he offers that.  If I buy something he carries, I'll try to route the order through him. I think we have to support places that let you listen.

I found the resolution and soundstage of the Paradigms to be extraordinary. You can hear the wood of the solo viola, and the movement of cymbals when struck, the voices and locations of individual string instruments (even low strings) in ensemble, clear as a bell.  I don't think it's a speaker for big bass, but that's not a huge priority for me.  I like the impression of the ensemble or orchestra laid out in front of me, life-size as possible.

My only reservations were a) I don't find them terribly attractive visually, and more importantly, b)possible longer-term listening fatigue.  The Paradigms came off as a little hot in the treble, to me. Dave disagrees, in person and in this thread above.
Doubting my aging ears, I looked up test bench measurements last night.  Multiple measured (on-axis) frequency responses of both the 3F (and 5F) are certainly consistent with what I heard, showing a substantial bump from 5-12khz:

https://www.soundandvision.com/content/paradigm-persona-3f-speaker-system-review-test-bench

They were toed in a bit, and if you look around you'll read a bunch of reviewers/users are setting them up facing straight ahead to avoid an overly bright presentation.   I'd like to listen to them against the KEF Ref 1 (and maybe 3), and try the off-axis set-up this time.  Apart from the brightness, I think the Paradigms are *very* stiff competition for the much more expensive Wilson Sabrina.

The KEF 3Rs are a really nice speaker.  Not quite up to the resolution and soundstage size of the Paradigms, but a great value for much less, and great looking (in Walnut particularly).  I think you could spend a lot of happy listening hours with them, and I suspect it would be hard to do better at that price point, at least from my limited experience.

I still wouldn't mind listening to PSB T3, Monitor Audio, Vandersteen. The latter is a longer drive, and the former two would seem to require mail order trial, which is a schlep with such heavy units.
One possible wild card:

I have a pair of JBL L830s in my country place. My son bought them for me after blowing out their predecessors (Mirage).  I am often very pleasantly surprised with these little $400 speakers. There is no good listening position in this (angular,open-plan, 1968, architect-designed) house, but the horn covers a huge part of the frequency range smoothly and sweetly (never really been a horn guy before), they throw a decent image from a variety of listening spots, and they have surprising bass response (I ended up getting rid of the subwoofer).  It makes me wonder what the $10k S3900s can do with a similar design.  JBL is pretty mass market now, but I have some fond youth memories of them....
Just ordered a set of 3f’s with Anthem STR amp and can not wait to get them set up! I still rock some late 80’s vintage NAD & Polk equipment that has served me well for a long time. Ended up adding a JL sub cause I couldn’t justify the over 6k persona sub. Loved the bright side of the B & W but was left wanting in all other areas. Paradigm was not where I thought I would end up but the more I listened the more I loved em!
Cmc3 congrats the combo is very good, we used them with the Paradigm SW 1000 which is a $3k sub you probably got the JL E 112 which is a $2k sub.

We used to sell JL as well the Paradigm was even faster and more articulate although a bit more expensive. However even the Paradigm dealers rarely display all the Paradigm subs.

You are very correct that a good sub plus the Persona 3F are a fantastic combo, the additional bass of the woofer provides greater bass punch and warms up the 3F's presentation a bit.

You got a fantastic system there, burn in the speakers, use a good power cord on the STR, and when you are ready add a set of Isoacoustic footers under the speaker to replace the factory spikes and boy you will be in real heaven

Dave and Troy
Audio Doctor NJ Paradigm Persona dealers
well I'd like you to tell me what's better than the monitor audio pl300 II or 500 ll cuz I haven't heard anything at 4 times the price. In fact I know someone that has the 500s and he put them up against the Wilson audio Alexx which cost 105,000 and the magical Q5 which cost $85,000 and he said that the 500s beat them both handly in every area.