hey guys what are your thoughts about upgrading to the denon 4311 for my pre-amp? I like the Pre-amp mode that the 4311 offers. Which is the better machine?? My only compliant as of right now is that I have a low background hum coming from my speakers. I have figured out that the 4308 is to blame due to process of elimination. But to make a long story short the xpa 5 is picking it up since it has such a high gain. Will I gain anything with the new 4311, better sound, anything?? The 4308 has advanced AL24 on all channels.......idk i'm in limbo as of right now. Can get the 4311 @ newegg @ a good price.... any thoughts, suggestions, and opinions are greatly appreciate!!!