Don't know about those particular MLs nor the setup, but I loved classical on some planers I once owned (ribbons) -- actually, it was the soundstage (in addition to the ultra-clear/smooth high end) I heard from them when playing classical that made me say "I'll take them". They didn't do so hot on rock or jazz though -- in fact I blew an amp trying to make them bop once. I liked the power balance of full range bipolars enough to stick with them pretty much afterwards, even preferring that with a reduction of the ultra-clear highs.
IMO, bottom end audiophilia starts when you pay attention to acoustics, and start arranging your equipment according to how it sounds. I never got into 5.1 because I had a hard enough time getting 2.0 done right, and never the space / layout to try surround. And it was just fine. So if classical didn't sound good, I'd drop 3.1, change the layout, and maybe even upgrade the drivers in the same line before I gave up.
Also there's a saying about some equipment being too revealing.. if those speakers were as good as they might have been, then perhaps they were showing problems upstream. That's not hard to imagine; Best Buy's doing great going this far -- perhaps they have a bit more to do.