Writing this in it now...
IMHO, Chrome is already the best mobile browser. I was impressed enough with the stock ICS browser to not bother with my usual collection (Firefox. Opera, Dolphin). But I figured I would give Chrome a shot, just because I can, on the Galaxy Nexus.
Not even sure just why... nothing all that dramatic. Maybe its just built to tap the resources of a higher end device. But regardless, best mobile browser experience ever.