Krell HTS 7.1 vs Denon AVR-X4300H


Trying to build a home theater system which can double as audiophile stereo, either 2 channel or 5 channel. 
Sound is more important for me than picture. 

ordered epson 5040ube
already got krell KAV500 amp
just placed an order for oppo 205 blue ray
have rel S5 sub
considering vienna acoustics 4 ohm speakers, mozart for front and haydn for rears, with center maestro

Need a home theater processor. Have a good offer on Krell HTS 7.1. (1000$) vs. Denon avr x4300h
What would be better for my setup. What are pros and cons of either preamp? I would use the devon as preamp for sound only as it doesn't have anything modern in terms of video. As I mentioned, music is very important to me. What would be a logical choice here? Any other suggestions for preamp and spearers are welcome, I'm new to this home theater stuff. Also, Dolby atoms is not important to me, my amp only has 5 channels, unless i can use denons amp in addition to my krell amp to add more speakers, not sure if this is possible. 

My current 2 channel audio system is Mcintosh ma6600 with mcd550 and vienna acoustics mozart, and I love the sound. 
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" The only reason to use a 2-channel preamp is if you didn't care about the quality of HT at all (in other words, HT is just something to watch movies on and takes much lower priority for sound quality). "

I don't know if I would go that far. Generally speaking, 2 channel audio is much more demanding than HT audio. You can get away with lesser equipment for HT.
Can this be done: 

connect OPPO to KRC3 and HTS7.1 and then to krell KAV500? 
If so, how exactly would it work? Im having difficulty visualizing this. Would I need an extra amp for 2 channels? Extra speakers? Does this even make sense? 

I would really like to integrate KRC3 into my system. By the way, I do not have the Denon. I have to pick either denon or HTS7.1 or like some suggested marantz processor. 

On a separate note, what about really old Mcintosh processors, mx-119, mx132? etc. Are those any good for my use as Home theater and preamp for stereo? If I use oppo analog output into an old mx, would that be better than krell HTS7.1? I think prices are pretty close for those two. 
@sfall - yeah, totally understand.  My answer was under the assumption that he wanted to use both a 2-channel preamp with a HT Processor/Receiver.
Can this be done:

connect OPPO to KRC3 and HTS7.1 and then to krell KAV500?


I would not do this at all.  You are running the audio signal through two preamps, first a very low resolution KRC3 and then a nice but soft HTS 7.1.  Trying to merge both a 2-channel system and an HT system together with both 2-channel and multi-channel preamps is not a good approach.  Like I said, you really can't have both worlds unless you spend a lot of money.  If you're looking at the really old Krell stuff, I would just get an HTS 7.1 and use it as a 7.1 preamp with the Oppo.  The preamp quality of the HTS 7.1 is much better than the KRC 3.  I know you like the asthetics, but this will not actually improve the sound quality if you have both of this in the signal line.

Exactly the answer I was looking for. Thank you. 

Now, the question about old Mcintosh MX processors, 119 and 132 I think are around 1000$. How would those compare to HTS? Pros and Cons.