I want to add a power amp to my current system (Onkyo TX-SR701 a/v rec, Angstrom Modular 2,4,8's and 6C centre cahnnel). I was looking at used but I'd feel more comfortable with new. I was looking at the NAD C-270 which is $800(CDN) incl. taxes. Any comments on this amp or would you recommend something else?