I can speak for the Denon 3802. I picked one up used for about $500US. Sounds great and I like the way it looks. I picked up a Harman Kardon for my bedroom (AVR-125) and while it's on the low end (45wpc, 5.1) it powers my M1's, Mzero's wonderfully. I can't imagine one of the higher end HK's not sounding as good.

If you want to move to separates, both will act as preamps also.