I have purchased a few lots of RC stuff in a year. I am into cars and truck, but might go into flying later on. On those lots I have acquired 2 Futaba airplane transmitters. A Futaba Concquest 4 and a Futaba Attack 4 with a matching 4 channel receiver, both look vintage with the black and chrome casing, a power meter on center top and all reversing channels and trims.

What is the difference between the two, I am about to let go on one of them, which one should I keep?

Thanks