FWIW, people who's worth their salt say the 3007 is better than the 3008 (which makes me sad) in terms of colour reproduction, image lag/ghost, etc.
It depends what you want out of the monitor. The 3008 can be your perfect entertainment companion if you want it to do more than handle your computer tasks. It has HDMI, 2x DVI, VGA and component as well as an obscure, yet untapped, DisplayPort. I tried running my Xbox360 on it via HDMI and it looks great. So you have the whole gamut covered pretty much.
If someone offered me a 30" ACD trade for it, I wouldn't think twice though.
Hope you're more confused now than before. Have a nice day.