I really like my CB Leek. The D2 does hold its edge longer for my EDC use (compared to my Skyline w/ Sandvik steel). I've read some stuff regarding corrosion/rust issues with D2, but I haven't experienced problems with mine. The D2 is a bit more difficult to sharpen, especially by hand on Arkansas and water stones. If you have diamond stones or some powered systems, then you should be fine.
The S30V/G10 version obviously uses a different steel, but it's also a liner lock instead of frame lock, if that makes a difference. I've got both, and I prefer the feel of the frame lock version.