It's only been about three hours, but I've been running my Senseable 3.1 at 806/768 with no ill effects that I can see; nothing but speed and quickness all around the device's apps and menus. Battery levels don't look any different from when it was running at the default 528. Still testing, of course, but I have to admit I am startled at this because my first few tweaks on other ROMs would freeze the device when I attempted to go over the mid 700s. I am of course wary, and will be watching, almost expecting something bad to happen down the line; we'll see. What is the highest successful setting you have used or are using now?