Checkcoin [CKC] and Paycoin [XPY] for me are by far the best long term investments this year. Checkcoin development is slow but is backed by a dedicated company from the Netherlands.
The launch of their geocaching software is planned for early 2015 and should liven things up quite a bit. As for Paycoin, well I got in early and with the millions of dollars GAW has invested in the project, it would be a mistake to take them lightly. I believe XPY can easily reach $100, possibly more by the end of 2015.