Nine Parchments. I always find that game relaxing and fun.
There are 2 main differences between OLED and LED version other than some minor differences such as slightly better performance, slightly more silent fans and a little better touchpad(as I hear- I might be wrong here)…etc. The big difference is of course the secreen. I am told it looks amazing. The LED one is good-looks pretty so don’t get me wrong but OLED is probably as good as it gets. Super eye pleasing. The other main difference is the battery. OLED one can run (I assume) about %40 longer then LED one. Don’t forget that those AAA games you want to play will drain battery fast so with LED one you will need to play plugged most of the time. The smaller games will not be an issue, you can play them for 5 hours non-stop with LED no problem as long as you limit your brightness, device power and framerate a bit.
Saving won’t hurt but I just pause my games and put the device in sleep mode. That way when I open it, everything is ready. I never had any issues not even with AAA games. The device works perfectly as soon as I open it as if it wasn’t sleeping.