I turn it OFF instead of on standby if I don't think I'm gonna read anymore that day.
I installed PRS+ on it and made the RIGHT center button OFF button when reading a book. Kept it SIMPLE and battery lasts months!
It takes about 40 seconds to start up , so I'm not doing the OFF if there is chance of me reading more that day.
Without PRS+ it was a PAIN to turn it OFF because I had to go through 3 menu pages to find it. Now it's EASY and find I use the OFF more often.