I have ripped 1100 albums to 315GB FLAC compression level 5 non-Sooloos system, of which about 500 are classical. All include 300x300 to 500x500 album art so doing even better than Carl. I have a fair few more to go. Do we think Sooloos takes more space because it also stores reviews etc? In a few cases with classical albums that have two major works by different composers I rip them as separate albums, but I shouldn't think that the few like that makes a significant difference.

MC200, Twinstore, 808v6/ID41 -> DSP8000SE (+ SB Touch, Sony BDP-3300, SKYHD, legacy cassette player)
2nd system: MC200 analogue out, Linn LP12, SB3 -> Quad 34 -> M60 rosewood
F80 (Rubino Micallizzato)
F80 (Rosso Corsa)