Advice needed for new HT receiver/amp

I have decided to take the plunge ... bye to my ole 36"CRT ... Decided on Sony 52" Bravia XBR. I have a Denon AVR 1803 which has suited me well, but the 1080P screen will require more than my Denon has to offer .... no HDMI! 5.1 suits me fine (currently two rear Paradigm TITAN 15-100 Watt speakers, two Paradigm PHANTOM 15-150 watt speakers, one center channel Phase Technology TEATRO 6.5, and one sub-woofer Phase Technology 12B). I do not have a High Def DVD as of yet, that will come. Would a single receiver/processor and one, perhaps two, amps be the way to go as opposed to upgrading the Denon I have???? I want a really good movie experience ... usually watch TV w/o use of receiver as of now ... no probs changing my ways if need be. Occasionally used as audio only, but rarely. I figure approx $3000 for Sony LCD and would like to keep budget under $3000 for new receiver or processor and amps. Any help or advice much appreciated .... thanks .... Patrick