Does it have to be new? I mean maybe you can invest into something older? As we all know here the new coins that are not tested by time are usually bad investments and that is exactly why many people suggest staying away from them until they prove themselves to be a good contender. I personally wouldn't go into anything that is not 6 months old, I probably stay away from all the new ones under 1 year and aim at staying away from under 2 year as well.

I personally have bitcoin, ethereum stuff like that but if I had to do any PoS coin I would probably go with tezos, cosmos, waves and stuff like that because like them or dislike them but we all know what they are and who the creators and how the coin is doing which is all it matters for me and at least I can be sure for what I am investing into.