just dl'ed the dolphin browser beta apk, converted to bar and am running it on my playbook. I have to say its pretty quick, especially over the bridge. can't wait to test it out over wifi and compare to the pb browser, but apparently it's kicking on html5...tests at 450 with 3 bonus points a better base score than even the acclaimed BB10 browser at 447 with 10 bonus points.
here's the link to the dolphin beta site:
Dolphin Browser Beta