I was considering to add a power amp to my HK510. I was choosing between B&K ST3140 (3 x 140w), AMC 2N100-3 (3 x 150w), and Denon POA-8300 (3 x 120w THX). Yesterday, I went to a local store that had a Sherwood AVP-9080/AM-9080 combo for a demo for $1200. I don't know whether to get the Sherwood and trade the HK510 for more than half less than what I paid for or stick with my present plan of adding a power amp to the HK510. Any comments? My speakers are Acoustic Energy Aegis 3 (Fronts), Aegis Center, Aegis 1 (Rears) and Aegis Sub. Thanks in advance for your replies.