I think that says it all, if you don't mind shelling out the dough the Brakesmart is probably the best. I have had plenty of good luck with my Prodigy controllers, easy to use, never a problem.
I am converting one of my work trucks/trailers to elec over hydraulic and I am going to see how it goes with hydraulic trailer brakes and a Brakesmart. I am doing this because after the high initial investment I am expecting better performance and less expensive trailer brake jobs. Buying electric brake parts is getting spendy. This is on a truck/trailer running 40k miles a year.