Pretty new to cryptoscene but I guess I´ll throw my favourites anyways!
1.MoneroCurrent king of privacy coins which I can see becoming more and more important with new regulations. Also one of the strongest coins tech wise and if we can get hardware wallet support this will be huge. I also like mining algorithm not suitable for centralized ASIC mining. Just very strong coin overall and marketing hasnt really been there so still sleeper in my books.
2.TenXMy top pick for crypto credit card providers. 2018 will likely be big year for crypto mass adoption and being able to use them pretty much anywhere is amazing. When someone says bitcoin is cool and all but they wont touch it until they can actually use it to buy everyday things, then is the time to show that shiny card and tell how you actually paid your last groceries with bitcoin! Also amazing if you are traveling to another country, no need to get hands dirty with that fiat money. And as added bonus this is still really cheap.
3.SubstratumAmazing community, good communication from team and they already have done succesful testing. There is great demand for their product so I cant really see this one failing. ICO investors are already happy with price but I think it is still undervalued.
4.Electroneum Still not released so this one is risky business, but when ICO coins get released this will likely get huge dump and then is the time to strike. Crypto is still too complicated to use for average Joe and I havent seen any other coin trying to take advantage of this. I dont think I could recommend trying out any other crypto for my parents unless I´m guiding them through the process. Built in "faucet" can also be huge for people just wanting to try it out without making investments and gaining trust in the cryptoworld. Too bad mining rewards just went down, this has been king of profitability for over month straight