In my view, the B&W CDM 9NT is one of the best candidates in its price class, although it can be difficult for some amps to drive. I am not familiar with the Plinius 8200, so I can't comment on how that combination would sound. Obviously, you'd want to hear both speakers with your amplifier and if you can't arrange for an in-home demo, then I'd seriously consider bringing your amp to any local dealers who sell those speakers. I'm sure that most credible dealers would be happy to demo the speakers using your amplifier. Of course even this type of audition is no substitute for an in-home evaluation, but it may give you some insights as to how the Plinius/B&W combo will sound.