My dilemma, some advice please.

In the mix of building up my new home theater. I want to use the new codecs from blu ray, of course.
What I am not sure about doing is this.
Buying a new receiver that will decode them for me, and get a denon 2500 (transport only) via hdmi.

Or buying a denon 3800 with analog out's and get a krell showcase 7.1 or HTS 7.1. Let the blu ray do the decoding. I know this will be killer for 2 channel also.

Thanks in advance.