I dont' agree...unless you for some reason don't like the sound of live unamplified music, then getting a good facsimile of live, unamplified music might not be your ideal. Once you put "amplified" in the sentence then all bets are off because live, but amplified can range from awesome to god awful and everywhere in between. Sure it is still live but you have no idea what the intrinsic sound might be...just like most studio recordings. In my understanding of making it sound like live, unamplified music you will be fooled...at least to some degree...and that is part and parcel with the identification with live and the degree of "liveness" a system possesses.
My preferences have gone steadily in one direction actually. I went to horns only because A) I needed something smaller than 2.4 meter high electrostats and/or ribbons and B) I finally found some makes/models that are low enough in coloration to be convincing. Otherwise, I probably would still have large planars. However, my horns give me a more lifelike "punch" than my planars of the past but the gap is not enormous...at least with some stats...with others it is huge. Depends a lot on the maker. The planars did a better job of recreating the space of a performance and that went a long way towards believability in that respect...and preservation of tone.
I went to tube amps quite a while ago, particularly SET (although they were hybrid SET (KR Audio)) and have never looked back. I tried a push/pull hybrid again (Einstein) and a Class A push/pull triode again (VAC 30/30 and PureSound A30) just as a sanity check. I also had for a while another kind of SET hybrid (NAT Symbiosis SE) where the output was transistor rather than tube (like the KR Audio). However, I am now back to tube output SET (Wall Audio Opus M50, JJ322 and Ayon Crossfire III) and would not go back to any other technology...save perhaps SET OTL (there are a couple out there). SS amps, push/pull and SET, to me fail in delivering what I hear live, usually with tone but also often with dynamics...particularly micro-dynamics. The best amp to date that I have heard with this is the Aries Cerat Diana integrated (small review spoiler!).
I was probably one of the first (and probably one of the only) people out there to strap a SET to a big Electrostat or Apogee. At least no one else on the forums talked about this kind of combinations. Everyone "knows" you have to have big powerful SS for Apogees and Maggies...except you really don't if your room isn't huge (btw. they work well in small rooms...another myth busted). Electrostats were too demanding (some are...some aren't) for a SET. Well, at least with Acoustats (and the STAX ELS F81) they worked beautifully. Maybe Soundlabs not but have you tried?
So, the Gaudi was good for Rock, what disqualified it for Classical?