i didn't really notice the browser differences....but as of now, ICS is broken for the SGSII....until a stable final release is pushed (or at least one you think is worth us flashing) i don't plan on going back....
although, i must say i'm a little curious what a "2.5 Personal Ver" really means....lol
Oh its a mix thats best for me, the ROM is around 110mb (no samsung stuff, twlauncher etc), some extra customise init.d scripts for like CPU control, GPU control etc. Some more other init.d scripts (tweaks for governor). Mixed KK2 & KJ1. A modified build.prop, KP1 modem and Siyahkernel v2.6 battery