Hello dbphd,
Now you're talking! Excellent choice.
Here's a Stereophile very positive review of the class D NAD M22 amp I just read:
www.stereophile.com/content/nad-masters-series-m22-power-amplifier There's also a NAD M27 amp that retails for $1,000 more than the M22. It uses the exact same custom Hypex NCore 400 class D modules with the same 250w/ch as the M22 but has 7 channels instead of 2. I know that's 1 more channel than you need but it would give you the option of powering a center channel if you ever wanted to use one again in the future. It would also help you downsize and steam-line since all of your required amplification would be in a single component enclosure rather than several.
I think you'll really like the sound of either of these amps, the review on the M22 stated that both the M22 and M27 amps sound almost identical to the Parasound A31 3-ch amp.
Great job in identifying the NAD class D amps as an excellent solution for your soon to be downsized HT system.
Tim