Out of the ones on the list, I'd probably go with this:
http://www.bestbuy.com/detail.asp?e=...1&cat=3&scat=4
The runner up would be the Yamaha. The Pioneer, however, has another channel powered for DD EX, as well as Pioneers tend to have a bit more oomph to them than receivers at the same range (at the cost of THD, albeit). The problem I usually encounter with Yamaha is that they're way too bright for my tastes, but they certainly are a contender at that price point, imo. I would go to Best Buy and fidget around with them a little bit to see if there are any features you like in particular, but on pure sound, I feel that the Pioneer would beat out anything in that price class (from Best Buy).
