The LCD-2 Rev 2's I ordered just arrived. Given where I'm at right now (without any of my media drives, or any of my primary rigs), I'm in what I call coffee house mode, listening to Spotify Premium, and driving the LCD-2 Rev 2 from the Fostex HP-A3 (which is a USB bus-powered DAC/amp).
I was just using the LCD-2 Rev 1 before this, and the changes are noticeable, but the LCD-2 personality is still very much in effect (which is a good thing). That said, crisper is a word I'd use, right off the bat, and I mean that entirely positively. I won't say much more than that--not until after I get a chance to get my lossless files and primary rigs in front of both versions, side by side. Then I'll definitely be talkin'.