I've only had my PW2 for a day so it's too early to say what I will use it for, but I'd imagine I'd use it as a backup for the 2. I have 3 other ereaders, 2 tablets and my mobile and ipod touch that I could use as a backup but my prefered device to read on is a kindle. So having another PW if anything should happen to my PW2 makes me feel happy