I like Chrome after they officially added the extension support.
Mozilla before that though
Firefox is over-rated, and Google [strike]crap[/strike] Chrome doesn't support windows 9x. I understand windows 9x isn't mainstream anymore, but honestly, it's *not* difficult to support it.
I think Google chrome is a conspiracy involving ch_123 and ancient Rome. ch + rome, get it? Nevermind.
EDIT: and yeah, "bowser/browser", that's silly. There's only one bowser, so, I'd say I prefer Waluigi. Especially since you can play as Waluigi in Mario Party 5 and fight Bowser.