there are many altcoin circulating on coinmarketcap and of course not all of the existing altcoin are very good, so we really have to choose carefully before investing in altcoin and the things you should pay attention to are,
1. the project has a good progress
2. the project complies with the roadmap and whitepaper
3. the team is always active in providing information about the project,

then altcoin that I recommend for you to invest in right now is, 1. UMB
2. RON
3. TIA
because I'm sure that when the next bullrun occurs, then the price will definitely increase very high and give you a lot of profit, but I still advise you to "DYOR".