All of the suggestions here are good, but only because these alts everyone is talking about have very low use, very low community numbers. You want to know what I think is the best coin for payments? Bitcoin. It is accepted by everyone, and the number of accepting people is growing.

Now I am reading up with great interest the developments of Lightning Network. This capacity is promising. If it happens, and it will, Bitcoin will return to being the best coin for any payment, even micro transactions.