Just finished watching iron man 2.
SPOILERS
Although as a comic book fan, I did enjoy it. It did touch on the the Demon In A Bottle storyline where Tony was going out of control. However they replaced the alcohalism with him dying showly. As a movie-goer, I did find it long winded and the action was rather short lived.
The fights with Whiplash were very short lived. Especially at the end. Like I considering that Iron Man was fighting dodging WarMachine and fighting drones for 15 minutes or so, i would of expected the same sort of screen time when Whiplash shows up with his suit. About 5 minutes later, movie was over. It felt like the director wanted to have a bigger fight with Iron Man/WarMachine vs. Whiplash. However the producers wanted to keep the film down to 2 hours.
The actors did a great job at with thier roles. I can not comment whether or not Don Cheadle did a better job than Terrence Howard. He was certainly much less soft spoken that Terrence which would of suit the part he was was playing in that film.
I did like that scene where Nick Fury was going off about how Tony just let Rhodes just take the other Iron Man suit..
/SPOILERS