The first 10 coins on the coinmarketcap are the best coins that you can invest and make really good money in years come. Bitcoin, ethereum, ripple, zcash, dash, litecoin and some many other that has good capitalization are some of the coins you can actually invest and make good money.
we can really depend on coinmarketcap alone because their list can change quickly. Sometimes top gainers does not necessarily mean they are best tokens to invest on. For me, research will still be best.
Bitcoin remains to be the top coin to invest on.