I've owned a Denon 3910 since 2007 and am happy with it overall. I use it mainly for audio (CDs, SACDs, and DVD-As) via multi-channel analog along with the occasional DVD. I don't own a Blu-Ray player, as I'm more into audio quality than video, but I do own a 42" HDTV.
That being said, I have had my eye on the 751BD for a few months as a replacement for the 3910 mainly based on the positive reviews regarding audio quality. But since the 3910 works fine, I haven't pulled the trigger because I can't really justify the expense of a new one.
Recently I noticed that Crutchfield dropped the price on the 751BD by $250 down to $899, so now I'm really tempted to buy one, but I'm looking for opinions on the audio quality of the 751BD vs the 3910 via analog outputs. I'm sure the 751BD is an overall improvement from the 3910, especially in the video department, but is the audio improvement enough to justify the $899 expense?