Which one of these models would you take for your home theater system if you would use it about 50% of the time for watching movies and 50% of the time for listening to music and you would use it with a 5.1 satellite speakers+subwoofer set (a good one-let's say M&K K5s, Energy Take, B&W MT, etc.)? P.S. Does the THX certification of the Yamaha give it any advantage for my needs? Any opinion will be highly appreciated. Thanks. Ariel.