Is it worth trying to sell the Rotel for a "budget" class receiver?
Is it worth giving up the Rotel just to have DTS-HD and Dolby TrueHD decoding for 3 components (HTPC, Blu-ray, and HD DVD) and HDMI A/V switching?
Oh boy, tough questions. In all honesty, I've been a bit underwhelmed with movie tracks. Oh, I think they can be cool and all, and I do like to crank it time to time, make things shake... have 7.1, might try bipolar surrounds, might even try dedicated side surrounds one day for my two rows...
but I think in the end the resolution wasn't as great as I hoping for. I'd also like to point out that the improvement in bitrate even for ol' DD and DTS improve simply from being on BD instead of DVD. No, I didn't do level-matched double blind testing. Do I think the new tracks sound better. Yes, maybe a tad, depending on the track. Sometimes I don't hear any difference. If I remember, something like DD = 448 to 640 kbs, and DTS (core) from 768 to 1.5mbs. So, really... how much are you really losing?
What I'd investigate.... maybe... is buying a cheap receiver with preouts and the minimum features you desire. Then use the preouts to use your Rotel as an amp.
Or, buy the receiver first where its still easy to return. Try all combinations to be sure for yourself. Maybe you can run certain sources directly to Rotel, such as 2-ch analog, and use the receiver as an HT pre only. I don't even know if this is possible, but just brainstorming on your behalf.
I guess when it comes down to it.. Im thinking if this is 100% HT, get the receiver as long as amp is good enough, and 100% music just keep the Rotel (although I know it can't be 100%).
Toughie.