Chrome is pretty decent, but as others have said, I don't necessarily trust Google because I'm a tinfoil hat. If you have no qualms about using it like I do, though, it'll probably work just fine. Has loads of add-ons (adblock, stylish, etc) and supports scripts by default. I think my main problem browsing-wise (aside from Google watching me) is that the included flash-player with chrome tends to have nasty sound issues in everything I use it with. As a result, I'd recommend using the flash-plugin from Adobe themselves for miscellaneous browsers.
Opera is also pretty good. Version 12 brought about a much faster, more memory efficient browser (at least from my perspective and use). It still lacks a good add-on repository (such as a good, dedicated adblocking add-on to make managing block-lists easier and faster). On top of that, i was having various issues with flash while using the newest Opera. Definitely a good competitor, though.
In regards to flash on Firefox, I'll agree that lately it's been getting worse. Some features no longer work correctly for me, memory spikes every so often, and, on occasion, I'll get freeze-ups while on YouTube or other flash sites. I chalked it up to me using Nightly (which very well may be the case), but a friend of mine on the standard update channel has noticed similar issues to mine.
Post edited November 04, 2012 by saldite