Have you tried it? It's pretty decent, regardless of the VPN feature.
Frankly, I'm astonished at the share Firefox has, given their repeated failure to fix the horrific memory leak, and the new, modular, crash-resistant beta seems to crash an awful lot. Chrome... OK, I suppose, but I often get odd glitches in vBulletin forums when using it. Plus, I'm not too enamoured with the "let's make everything Google" ethos.
I've had the odd crash in Opera too - it isn't perfect, but it gets my vote over the others at the moment.