B W CDM 9 NT versus Nautilus 804

After extensive listening and numerous increases in my speaker budget, I have narrowed my search to one of the above B&W speakers. These speakers will be my first hi-end audiophile purchase. I will have to upgrade components slowly, but figured speakers would be my first big expense. I will use them for 60% music, %40 HT. Music ranges from Mahler to occas. Metallica and everything in between.

My question is this: I have seen the N804's on sale here for around $2500, about the same price as a new CDM 9NT. However, I have not seen many used CDM 9NT's listed. I can afford either pair. Should I step up to the Nautilus line and buy used, or should I stick with a new pair of the 9 NTs? Interested in any advice the more experienced may have.