I've been looking at receivers at my local audio shops for the last couple of days and I need some help picking one. Here is what I'm looking at. Yamaha rx-v2500, Pioneer Elite 54tx, HK 635, and Onkyo 702. What is the better one out of these? I like the HK but was concerned about their QC issues. Anyway, if you guys can help me pick the right one I would really appreciate it as I plan on pulling the trigger on one of these either later today or tomorrow. Thanks.