I second what Fotiman says regarding Chrome... performance. For the average user I don't think you can beat it.
However, I have had a couple of problems with Chrome...
- The 'silent update' process has failed on me... silently! Several versions had passed before I realised it was no longer updating. I tried several documented fixes for this, but in the end I had to reinstall.
- It is the only application on my development machine that occassionally causes a BSOD! This has been going on for several years now! I have tried the hotfix I mentioned in this thread: I adore Chrome, but... [webmasterworld.com] but it didn't seem to do anything to help.