Best bookshelf speakers


I’m building my first high fi system after being more of a portable audio person. I want to start with the speakers. Space is limited so bookshelf speakers are a must.

Preferences:
Balanced and revealing with a hint of warmth.
Midrange most important to get right over highs and lows
Timbre is super important - I listen mostly to acoustic music especially jazz
But I do need some bass as I also listen to some electronic music
Smaller is better but SQ is most important
A speaker that sounds good with different amps but also scalable with high quality sources
Wide sweet spot - I wont have money for a great amp at first but want them to be scalable for later

These speakers have caught my eyes - any thoughts on them?

Ascend Sierra 2s - Ribbon = dispersion limitations?
BMR Philharmonitor - See above. Also massive.
Buchardt S400/S300 - Wary of the sudden hype train and limited info
Silverline Minuet Grande - Limited info
Reference 3A De Capo - This caught my eye as a potential endgame speaker if I could blow up my budget a little. But concerns about BE tweeter as well as some potential snake oil stuff (cryogenic treatment (!?)), exaggerated sensitivity claims and wonky measurements put me off.

What else should I be looking at?

Edit: I could have sworn I had <$2,000 in the title... Anyway, my budget is 2k.

stuff_jones
But this is a tangent. I'm perfectly happy to buy from a large manufacturer if it seems like the best speaker for my preferences and dollar and I have  a way to try it.
Fortunately we live in a time where there are many brands of amazing bookshelf speakers for under $2,000.  And if you don't mind buying used, there are many more options.  My MO with most purchases is to buy slightly used and get something high end for a great value.  i think you are wise to get some nice speakers and they will only sound better as you improve your other gear.

I just upgraded to B&W 805's and they sound amazing!  I have been listening to master recordings on Tidal this week and it has blown me away.  I kept waiting for a deal and I got them for $1175 shipped on eBay.  They look like new and sound great as well.   
Used loses you the warranty though, right? Is speaker failure a thing, outside long term degradation of the woofer/supports?

Is there much of a "lemon" risk buying used?
+1 on the Ascend Acoustics Sierra 2's. I tried several pairs of pretty serious bookshelf speakers (Monitor Audio GR10's, and GX100's - Dynaudio X12's, and Focus 160's) and the Sierra's came out on top. And they are on sale right now.