About your question on Stranger of Sword City...
If I had to decide between the two versions, I would go with the PC version.
My reason it's mainly because I prefer to play games on a bigger screen and it has bigger resolutions XD. Well, that and games are usually cheaper on PC :p

I've been playing this one for a while and I haven't found any problems whatsoever.
Don't worry, the game is practically the same on either platform, the only difference between the pc and the psvita (besides the price) would be the screen resolution and the ability to add your own images to the game.

Hope this helps somehow :)