My favorite coins are Digibyte (see their Digusign service), Verge (privacy), and LBRY Credits (competes with Youtube). In the below $50M range I like ArtByte, Bata (barter platform), Darcrus (disruption in the database industry), Musicoin, Viacoin, and Voxels (virtual reality). I have a recent blog post that describes more detail on many of these ideas.