I've tested all these browsers completely.
The ICS+ browser on the market is really good in that it has a permanent desktop setting and some nice gestures.
The only two third party browsers that hold up ( in terms of downloading heavy sites fast) are boat browser mini, and Opera Mobile. Now havent done my 5site test ina while and things might have changed a bit but the other browser whilefeature friendly are just slightly slower...or more than slightly in some cases.
Iphone, and 3G,
Htc Evo 3D
Samsung Galaxy S II 2
Epic 4G Touch
Samsung Galaxy Note