I personally moved to chrome (from Firefox) out of necessity.
I run 64bit W7 and I keep a Lot of tabs open and Firefox kept CRASHING. Call it flash's fault or a maybe a diff plugin or whatever u want, but I'm a pc tech and I did all the things that anyone with a brain would do to get it right and nada...kept on being BS. So, I switched.
The only I don't like about Chrome is that the tabs don't scroll; they simply get smaller and smaller. If I could change it, I'd actually prefer to use Opera's style of tabs; where they have an Areo like preview.
That being said, Google Chrome is about as stable a browser I've found and that counts for a lot.