DAC or Preamp controlled by DirectTV remote

I hear you about simplicity and WAF, but honestly, the Harmony is super easy to use, once you program it on your computer. The cool thing is that you program "activities" which are like macros on your computer. For example, my Harmony 900 has a color touch screen at the top (the rest is regular buttons laid out much like the DTV remote). When you pick the remote up off the charger, the screen lists the different activities, such as "Watch TV" or "Watch Blu Ray" (or whatever you program it to do. When you click on an activity, it turns on all of the required components, turns off any components you are not using (unless you program it to keep them on), switches the inputs on your TV, processor, scaler, etc., and then switches the touch screen buttons to activity-appropriate functions. Also, you never have to slide a switch to tell it which component you want to control. It already knows. Anyway, it's pretty cool stuff for $159 on Amazon (http://www.amazon.com/Logitech-Harmony-Universal-Remote-Touchscreen/dp/tags-on-product/B002RL875A) I think it was over $300 last year.

OK... Leaving out the remote control obsession, my main goal now is making sure what I buy will work in my system.
Yes, Goldprintaudio, I've narrowed down my choices to either Bel Canto DAC or the NAD M15 or NAD M51 HD. The Bel Canto seems best but the NAD M15 has pass thru HDMI to take the sound signal out of (6 of them) compared to relying on the Panasonics optical out to feed the Bel Canto DAC or NAD M51. I've talked to Panasonic about the signal generated optically and it can be Dolby or PCM (??) and am concerned about decoding abilities of both units. Also think I don't want or need the extra complexity of the surround circuits in the M15.
So.. the bottom line question now is will 3 HDMI signals going to the Plasma TV, and being switched in the TV, generate a compatible optical output to a Bel Canto or NAD 2 channel DAC. And, is the signal generated by these DAC's strong enough to generate higher volume levels as they are not ""full blown" preamps. (or are they??)
Again.Thanks for any ideas/suggestions. I've been messing with this for years and don't want to put another "brick" in my pile of processors in the closet which now includes EAD, B&K, Sunfire & ACT3.

I have a M51 DAC and its pretty amazing. It had no problems driving my Vincent SP331 amp or my CIAudio D200 MKii amps. Its has one of the best digital volume controls out there and can decode just about anything from PCM to SACD. Check out the NAD site for the downloadable manual and specs. If you do some digging you'll find a few personal reviews on the internet and they gush over it. Not many reviews as yet since it's pretty new. I did a review here on 'gon if your interested. Also the unit has balanced and unbalanced outputs. I would say it is a preamp, but you only have one analog out.

Thanks again to all & an update. After much study, have settled on a Marantz AV7005 at least temporarily as a financial alternative so to speak. Ideally, a higher end PrePro such as NAD M15HD or Classe etc with 4 or more HDMI ports would be my choice but the $$ just isn't there it seems. I will try operating the Marantz with the Direct TV remote but might just try the Harmony as all have suggested plus use the TV as a monitor only. Have been lax in keeping up with the audio world for many years but this episode has rekindled a 50 year affair with the field.
It's gonna cost me I think. I'll post later on results.