Speaker upgrade for classical music


Hi, I need recommendations for a speaker upgrade. I’m a classical violinist and listen almost exclusively to classical, opera and jazz. No movies, Atmos, etc.  I have a 17x14 listening room (doubles as practice room) with acoustical treatments (phase coherent diffusers at main reflection points and regular ones elsewhere).
Half my listening is in stereo and half in multi-channel (4.0 and 5.1).   All my recordings are either CDs or high-res—DSD and FLAC—audio files. I don’t have a turntable. 

My current system: Marantz SR 8012 amp, Yamaha S1000 CD transport, Exasound e38 DAC and Sigma streamer (connected to the Marantz with analog 5.0 inputs). Speakers: Polk Rti A7 stereo, CSi A6 center, Rti A3 surround, and dual REL T/7i subs. 
What I want: speakers with improved musical detail and clarity that really reproduces the expansiveness of the symphony hall or church. I like a warmer sound than a drier one.  What’s most important to me is to hear what the recording engineer heard. Budget: say 8k or less.

Recommendations?  One other thing: Can I try them out?  And how?  I’m in Santa Fe, not a huge metropolis with lots of audiophile shops. 
Thanks very much. 
ssmaudio
Regarding the Tannoys and KEF for center/surround combination: how did you decide that KEF would be a good complement?  Curious, since I’m trying to figure out what to look for to pair main speakers with the surrounds. Thanks!
Magnepans 1.7i or the 3.7i if your room is big enough for 3.7i’s with a Parasound A21+ will be hard to beat for the money. For a preamp look at the Schitt Freya+. With the 1.7i’s you can probably do it all with some Canare speaker cable in your original budget and be a killer system with your subs.
Call Truewill Mashburn at Lucky Dog HiFi. He is local, really knows
his stuff, and is committed to good outcomes. 
Hard truth is that your amps, DACs, power supply chain matters if you want that realism in your room. For instance, you want a natural sounding “analog-ish” DAC like the holo audio may ($4k+). Focusing on speakers alone is a recipe for disappointment.  Everything matters for the sound.
I would recommend a pair of used Vienna Acoustic Liszt speakers.  I have them, listened to probably 15 different speakers before I bought them.  I listen to rock, classical, jazz and roots music.  Mostly classical and jazz.  Some really like the Harbeth speakers but I find them too creamy and recessed in the upper ranges.  Other speakers just saw my ears off in the upper frequencies especially violin.  They will reward you with good electronics.  Subs probably not needed.  I really didn't care for the lower level Vienna speakers, just my two cents on what I hear.