I would consider Bitcoin my favorite coin for investment. It is without any doubt the most popular coin available out there. It is the most widely accepted crypto and you can expect good amount of growth from it in future.

ripple is another good projects available in the market which is based on idea of global value transfer. Many companies have already partnered with this project and this project can revelotionize the global banking scenario.

litecoin is a coin which is know for lightning fast transactions as it is almost 4 times faster than Bitcoin. The transaction fees is also very low.

But the coin, I would surely recommend you to invest in is civc.the idea behind the project is of low cost identity verification with help of blockchain technology. I think it's value will grow to tremendous levels within 3-4 years and you can expect huge profits from this project.