I have a 50" SAMSUNG HPT5064 Plasma (720p) sitting in a large room. Now I'm planning to purchase a home Threater system for this set. I'm thinking for two combinations - 1. Sony STR-DG920 AVR with Onkyo SKS-HT240 Speakers or 2. Onkyo TX-SR606 AVR with Onkyo SKS-HT240 speakers. Which one you guys suggest? Also, will Onkyo SKS-HT240 fill a large room?