I use a number of different browsers generally, on a number of different OS, but my target environment was a Windows XP laptop, I that meant leaving out Linux & Mac based options. So I set my criteria at must be easy on the eye, supported by most websites, secure and lightweight. I started my search with Opera which is most certainly lightweight, good on security, average visually but unfortunately it is not supported by many sites I use. Then I reluctantly tried IE7 again, which has proven to be more secure than expected, I found it worked well and was surprisingly lightweight for a MS app. But after a couple of years of using FF IE rendering is ugly, large and garish, and that was enough to discourage me.
Then I remembered flock, a FF derivative with the social extensions built in. Running this with one extension 'Adbock Plus' gives me a stable environment with all the benefits of FF without the need for risky extensions. So far it works.
Blogged with Flock