The HK remotes bug me because they look like a Phaser gun from Star Trek...
Out of the models I have in my store (340, 635), I would probably take the 635. It is pretty close in price to the 340 (only 50 bucks more I think) and its got more juice and more options, but it doesn't have the IPod interface, which I personally don't care about because I don't like IPods.
I used to have the 635 hooked up to the Infiniti Beta series stuff (50 fronts, 20 rears, C250 center, PS12 sub (not Beta)) and it handled them perfectly. I would frequently put the Master and Commander clip from DTS #9 in there and draw a small crowd (15-20 on any given day) from all parts of the store. Now, since the Betas have been discontinued in our store, I was forced to put a ...
Bose... speaker set there. Anyway, moral of the story, I know the 635 can handle your stuff, so you might want to look at one of those a little more thoroughly.
~Chuck