First of all cheapest does not necessarily mean that it is the most profitable. I would rephrase to look at one of the more undervalued tokens.

And I would suggest Digipulse. They are a first mover in addressing digital inheritance on the blockchain, in case something ever happens to you, your digital assets will be willed to your loved ones or people you designate. confirmed token burn, beta is out, next phase of the product launching in july, and to boot the team bootstrapped there way up.

Gotta love the concept and the team.