One of them is surely going to be ripple , it has excess supply until last year they decided to escrow those funds. Since then it has grabbed my attention and the fact pricr has gone to as high as $3 which is a huge deal , they recently announced partnership with moneygram which is huge and shows how much potential it has to rise.

Second coin is going to be really hard to predict but if i had to choose i would go with nem because it has a different blockchain than existing ones.