keep in mind its easier to go from 100M to 1B than going from 1B to 10B and so on.
the bigger the market cap, the slower the climb.
I completely agree. Take a look to the market cap, and try to think which is the growth potential of altcoins.
Personally, I am interested in STORM (which already made 5x in 2 weeks), Gifto, dmarket and universa (when they will be listed on exchanges).
Others also suggest deeponion.
Before deciding to invest in something, take a look to the project and the team.