Okay, I also answered auto off wrong. It has never occurred to me to turn my reader off. I also just use sleep so my answer that I selected for 15 minutes should actually be never.
I use the 6 page refresh but when I got the touch for the first time for my son, I never would have done that as there was a lot of ghosting so I refreshed every page. I remember trying other options and couldn't stand it. I don't notice it on the glo though. It is much improved since back then.