You can't go wrong with XRP, especially after latest announcement that they will test payments with MoneyGram. It just can't go wrong. Only governments might have slight concerns about all of that. Zcash is as well good project that I'm looking to get into, either by mining or buying, it's one very promising project. In addition to that one one of my favorite projects currently for this year is DeepOnion project. I'm not sure if you've heard of it yet, it's a new project, with steady growth.
This is one of the privacy coins that I like as they have strong team behind it (community and developers) and went marching strong in 2018. I do love the fact that they run native on TOR with 800+ nodes without any additional setup needed as well. With some upcoming features like DeepSend (completely anonymous sending of conis) and VoteCentral (having community decide about future of the project) this is one of my top top TOP picks for this year. Other that I'm into XVG, but with all the manipulation and missed deadlines I think I'll just dump it. DENT is looking good and strong as well as GBX, these are few more that I'm keeping my eye on.
I wouldn't even put this much text together if not invited to share my thoughts here. Oh well this was a bit longer reply. :) Haha off to grab coffee and keep studying and researching cryptoland. :)