Samsung is horrible at naming....hopefully they are in the process of steam lining that. They kind of have with the s6 and s6 and the edge plus.They need a better naming scheme for the mid range. All the A variants are very confusing.
I was impressed with the A phone I played with but wasn't sure if it was A5 or A7 and even the owner wasn't even sure. They thought it was an S6!!'