I used an Anthem AMP2SE for about a year with my CDM7NTs. Seemed to be a really nice match. Plenty of power (200W/ch)and the speakers really shined. I only sold the amp to purchase a VAC PA100/100.
You may also want to look into getting a good 2 channel pre-amp with HT pass-through. Then just use the Onkyo as a pre/pro for HT and use it to also drive your center and rear speakers.
You may also want to look into getting a good 2 channel pre-amp with HT pass-through. Then just use the Onkyo as a pre/pro for HT and use it to also drive your center and rear speakers.