HELP me choose an AV reciever or processor please


I would really appreciate some input from some experts. I currently have a Sony 555ES reciever and it is time to upgrade my system. I also have a Phoenix Gold MX1260 amplifier.

My problem is I cant decide if I should buy an AV processor and pair it to the MX1260 or just purchase a new AV reciever. Currently I have been looking at the Sony 5400es I don't know which AV processor to get.

I really want something that can handle all of the HDMI 1.3 switching. I only want to run 1 cable to my TV. I also like the systems that are able to auto calibrate the speakers.

So should I be searching for an AV processor and pair it with the MX1260 or sell the MX1260 and just by an all in one reciever? Please help I've been racking my brain for a while now.
nsxxtreme
I went and looked at a Marantx 8003 but was disappointed that it only had 4 HDMI inputs.

I'm still looking. I know where to get a Denon AVPA1HDC1 for $4500 but that's a little more then I want to spend.
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How about another direction as I'm in the same boat! The question is do I go with a pro/proc like those mentioned above with HDMI 1.3 built in, or go with a used higher end unit (thinking of MAC MX135, 120 or 136) with a separate HDMI 1.3 external switcher (get ‘true HD’, etc.)? Waiting for Oppo BDP 83 to be released, would that serve the same function as the switcher? I still want the best I can get for 2 ch sound as well. That is just as iportant. Thinking of MAC monoblock 501's for front and MC205 for the surr. Can spend 4-5k for the pre/pro. Thanks