I have owned all of the hobby style guns at some point in the past. Here is how I rank them based on MY experiences (going from worst to best in descending order).
Hyper Smooth Pony w/ hopper
The EW Pro and the Redline EZ guns both broke in few months of use and would not charge the powder at all. Actually I went through about 3 EW Pro guns. I would suggest either the pony gun or the Caswell 50KV gun if you are set on a hobby gun. If you want to make the jump to a pro gun then take a look at the Hyper Smooth 02 with the multi coat tip.