I actually enjoyed Mass Effect 2.
The PC version has a few hickups with the targeting system/identification of items and characters but it has met my expectations.
I may be a nerd, because I enjoyed planet scanning. I hated the Mako in Mass Effect. So glad Bioware did away with it.
I also feel the characters are more interesting in Mass Effect 2.
I also have one other complaint, I did feel the main mission was a little on the short side.
Hopefully, in Mass Effect 2 more details will be revealed about the elusive man and his eyes.
Sidenote - Warp, Barrier and Shockwave are my favorite abilities.
I'm not a fanboy, I just try to tip the balance in favor of logic and common sense.