I really don't know much about receivers and thought you guys might be able to help me out. My dad's old reciever seems to be not working anymore and I'm looking to upgrade for him. He's got a 5.1 surround sound system (Definitive Tech 600) and we mainly use the speakers for cable watching with the ocassional movie and music listening session. I'd like something in the $200 to $400 range if possible with bluetooth and wifi. Something fairly basic I suppose. I've seen what seems like a few decent ones on amazon but if you guys have any specific recommendations based on my extremely basic qualifications, please share. Much appreciated.