I received a lot of comments from my twitter followers asking which is the best coins to invest. My answer is simple but maybe biased as there might be more out there I have never ever heard of. Please add your points here.
1. Reputation of the team (track records and previous projects if any)
2. Transparent roadmap/whitepaper with firm dates for snapshot, development, fork, main net launch...
3. Good marketing team to convey the message and manage crisis (rumors free....)
4. Chat rooms (telegram, github, discord...)
5. Minerable or not. I personally like the coins that can be mined, that does not mean I dislike tokens, just personal preference :-)
6. Always update on the progress and responsive to the community
7. Total supply of coins/ tokens must be set at the beginning
8. Pre-sale/ICO/Public sale should be setup.
9. Has its own wallet or at least having guide for setup with third party wallets providers (MEW...)
10. Having bounty/ Ref program. This show they have a good marketing mindset :-)
Just my thoughts and eager to learn more from you all.

You should have consider a good working product/services that has use in our real world,this is the most important thing to check when you want to have solid coins in your portfolio.