Hey guys I'm trying to decide if it's worth getting back into gaming on my vita. It's a 1000 series and while I do have a switch I am having hardcore nostalgia on the features it has over the switch. Here are my questions:

1. Should I service my vita due to the black blotches that only appear in the dark settings when the screen is in a dark environment?

2. I have a 16 gb memory card but should I go for the 64 gb? If so used or new? I see the G and J models but wasnt sure since it appears J has more memory but more expensive.

3. What games do you recommend that are a must have?

4. Should I get a slim model due to better battery and charging port?