In my opinion, it is hard to find a 50X coin, I prefer a more stable increase, and my target is like 4 or 5X which is still more realistic... 50X coins are mostly some pyramid selling mode, not mean it is a good project, if you are lucky, then you get profit, if not, then you lost all. For me, the most important is the quality of the projects.

The projects I invest now:

BitTorrent
Stellar
Ebakus
RavenCoin
Mithril
DGB