I've used a MR RM5 MkIII - obviously being from the same family it sounded fabulous, not to mention a killa phono section. I replaced it with an Audio Research LS15 & PH3 (phono pre) which also sounded great, but I'll admit to one of my primary reasons for the switch was having a remote! Sold off the AR gear and am currently running a classic Dolan PM1 which really sounds fine (and also boasts a killa phono section!;). There's currently a thread running over at the Asylum about 'musicality' in gear. I have Spendor S100's, a speaker known for it's 'musicality'. I think the RM9 also can be described as a 'musical' piece of equipment. Or maybe I've just been fortunate that it's mated so well with my system. Whatever it may be, I don't think you can have too much 'musicality' in a rig!