Impossible? Small towers, efficient, musical, loud

I've been reading on threads here for different speakers that sound good with rock, which is my primary pleasure. But I am also a lover of high fidelity and do not want to compromise on sound quality, so this isn't necessarily about speakers that just sound good with rock. My situation may be a paradox or impossible, but I'm hoping I can be enlightened favorably. I'm looking for smallish floorstanders that are tube friendly, placement friendly, and can still sound nice and full at reasonable to loud levels.

Room is an open design roughly 23' wide, 12' deep and vaulted ceilings 8-12' high. Listening area is 15' wide as opposed to the 23'. Speakers must go along the wide wall at 10' apart, one speaker is in a corner. Listening position is 10' from the speakers. I can pull the speakers out at most 2' away from the walls, depending on how large the cabinets are.

Associated gear:
Cary Rocket 88R (30w triode/60w ultralinear)
Promitheus passive TVC Ref 4
Eastern Electric minimax cd

The amp and the TVC are new, haven't yet received them yet in fact but will be replacing my current gear.

Current speakers are Usher 6381, large speakers that I believe are too big for my room. With the tiny amount I can pull them away from the walls, staging is pretty flat, though surprisingly I haven't had any issues with bass boom. Hoping to put them up for sale/trade soon and wanted some feedback on what I should be looking at.

I was considering something like the smaller Silverlines (though they may not be good enough) or perhaps some Devore's. Above all I value musical speakers that emanate a sense of realism. I don't require subterranean bass, just a natural, full sound that doesn't sound wanting without a sub. Musicality is key.

Thanks in advance