The move from XP is a bit more of a pain because you have to reinstall apps. (Requires clean install) ABM... I definitely think it will fix your browser crashes... most likely you have some type of plugin hosed or spyware because your browsers shouldn't be crashing.
Are you old enough to remember Windows ME? I get the cold sweats just thinking about it. And, oh yeah, Vista is the most unstable platform since ME.
I can remeber when you had to change a chip on your motherboard to upgrade your OS! Franklin's, Amiga's, OS2/Warp... my how things change. I think someday the OS won't matter... what we think of a PC will just be display device with very fast network connections. Tune to whatever flavor of floats your boat... everything will really run on some super computer owned by Google.