I thought this movie was great.
The handheld POV didn't bother me one bit, honestly I was 10x more sick to my stomach watching the Bourne Ultimatum. The camera work does a superb job of selling the frantic, confused mood of the main characters. My eyes didn't leave the screen once, I was pretty terrified the whole time.
**SEMI-SPOILER**
I don't care what the majority of people think, but I loved the ending I thought it was perfect. That's all I'll say.