I would recommend you to invest in both ripple and stellar. Both are based upon simmilar ideas of global banking and real time gross transfer. Both the coins are really popular. Ripple has been increasingly adopted by banks and payment networks as settlement infrastructure technology and is Used by companies such as UniCredit and UBS.
Stellar on the other hand recently became partner with TECH TYCOON-IBM. Both the coins have huge potential to grow and can help you earn tremendous profits in future.