I have Ascent i for LR, Theater i for Center. and a couple very good MK's for surround. While my Pioneer Elite 47 was good enough to drive my previous Aeons, it often shuts itself off during a loud scene from a film with my Ascents. I've talked myself out of a Denon 5805 to drive the whole system, and I'm leaning towards B&K Ref 200.7 (200 W per channel into 8 ohms, 375W into 4 ohms) and B&K Ref 50 for pre/pro. Magnolia stores sometimes uses the B&K in their showroom with Ascents. Are there Logan users out there who are happy with B&K (about $4500 for the two, nearly new)? For the $4000+, are there other amps,preamps I should be considering?