Looking for a Receiver suggestion.

[Mudfrog]

I've had my Onkyo TX-NR509 for about 6 months now and it's been a good little receiver but I'm going to need an upgrade. I'm looking for something that offers 7.1 / 7.2, 110w or more per channel, more than 5 HDMI inputs, audyssey setup and analog to HDMI upscaling. I prefer it to have a GUI similar to Onkyo's. I'm all for going with Onkyo again but it's not a requirement. If another brand offers better options for less money then I'd be interested.

Budget is $400-600.. 600 being the top end of the budget and I'd prefer not to spend that unless it's absolutely worth it.

The speakers I'll be using are Polk Audio CS2, Monitor 70's and Monitor 30's.