If you can swing it this month, alsozone.com is offering 10% off with the Founder10 code until the end of the month.I felt like getting the top of the enclosure off was a giant pain in the ass... there's at least a dozen screws to do it. (The other reason to have them is so you can see what channels are on if you use auto mode.)
I think I'm going to get a PAM258 next month... I'm satisfied enough with the one I've got that I think I'd like to quit using the AVR's amp entirely. That'll put me in a good position to upgrade to a dedicated pre-pro next year.