First of all, let me tell you that you are kinda late to the party to join Ripple, no offense, but this coin was 4 times more cheaper just five days ago, why do you want to invest now? it is a huge risk.

0xproject too, it was $0,22 during the last wednesday, now it is upto $0,66 each (and it dropped a 20% today)

Waves is a good coin too, only that this las price increased that it had was purely created based on speculation and hype.

If you want to join a good project, start investing on Monero right now, it dropped a little bit, maybe you can make some profit once that it recovers.