I'm sorry I didn't read every post on here but I think I can help. I own a ds lite with an r4, psp slim with 5. something m33 cfw, jailbroken iphone 3gs. Anyone that says dsi apparently doesn't know that the battery lasts 2.5 hours. DON'T EVEN THINK DSI. It now comes down to PSP, DSL, Itouch. If...