So I'm thinking of getting a used Vita, and so far Kijiji seems to have the best prices (Haven't checked eBay, but I prefer to be able to take a look at the system in person if I'm not getting it from a store). Anyway, I was wondering if there's anything in particular I should look out for. I saw in the other thread to look out for screen scratches, as well as OLED burn-in since I'm probably getting a PCH-1000. Anything else in particular? Also, a couple of other questions: 1. The organic compounds in an OLED screen degrade over time. What kind of "over time" are we talking about? 20 years? 10? 5? Already? 2. How do I check for OLED burn-in? 3. Some of the listings I'm seeing say their systems have only been used like 3-4 times. Does that mean the Li-ion battery might have issues from not charge cycling much? Is it easy to replace, and will I have to pay through the nose? 4. Besides the better battery life and non-proprietary cable, are there any other big advantages of the PCH-2000 over the PCH-1000? I'm a sucker for visual quality, so I'll probably get the 1000 anyway, but I wanna know what I'll be missing I've heard better design, does that mean ergonomically? 5. As above, any other things to look out for? Thank you!