Ditto on the 75%. The best Mapleshade recording I own and I've got a number of them, is Walk With Me by the ARC Gospel Choir. I'm not a fan of Gospel, however this is such a good recording for evaluation work on speakers that I consider it indispensable.
The best recordings, on a cd format, that I've heard lately, are First Impression Music's K2 HD recordings. These are uniformly superb and contain music that I can listen to. High-Rez recordings, both on Cd and hard drive servers are generally about as good as it gets and are getting very close to really good Vinyl in sonic quality. However, Reel to Reel Master Tapes, like those from the Tape Project, still hold the sonic edge overall.
Best Regards,
TerryO