I presently own a Pioneer VSX-D510 but I'm not satisfied. Here's my speakers: All Energy's XL-26 front CL-C2 center XL-16 surround S8.2 sub. My Pioneer is not powerful enough. My ht room is about 11.5 x 15 feet. I used my system 50% for movies and 50% for music. I have a budget of 1500$ (can) for a new receiver. What are your recommendation? Thank you.