With their curved panels, they don't have as much problems with beaming as a lot of stats, but it is still an issue. The only real problem I've heard w/ ML's is the difficulty of integrating the bass woofer with the stat panel. I haven't heard the new models that have the "uber" powered woofer section, so they may have solved the problem. Oh, and they need space, being bipolar radiating speakers, placement anywhere close to a rear wall is a no-no.