asking for opinions AFTER investing is a strategy i would avoid in the future... as for powerledger, I would say it is a good choice. It had good reception and generaly cryptocomunity is positive on its future... Eventchain on the other hand is flying under the radar for now, no a lot a serious reviews, smallish community... I personally don't think it will be huge in the future, but if the team is able to deliver on their promises it should make you some money.
In any case you have to do your own due diligance and research in ICOs, preferably before spending any money