Mine was at 80; read a post around here that said 70 was better; now have it at 60. I was having problem w/In OM in which the TB was moving so fast I couldn't control it.
i turned it down to 70 to just try it.
its eh. i don't make as many mistakes when i'm in a rush cause the berry isn't going as fast as i am. but when scrolling in a message or note its annoying.
give and take ya know