Welcome. Hope you enjoy the console.
If you're not averse to going full digital (or even if you are), PS+ is worth it.
Game recommendations (based on what I have) would be WipEout 2048 & Gravity Rush (both on PS+ in Europe at the moment) and LittleBigPlanet PS Vita (a game I just keep on coming back to). There's a lot more games I like but couldn't personally recommend to you.
Did you own a PSP? Prices on the store are quite good these days for digital PSP games too.
edit: OH, anything you're thinking of buying, check to see if there's a demo on the store. Might help you pick some titles you want :)