well I just bought the Evolution CS, but have been having issues with it connecting to my truck (nothing wrong with the Edge, something with my ECU). They have been awesome with helping me get it straightened out but it's taking time. once i get it on the truck I'll have input.
I have the evolution CTS and was having the same problem getting it to mate to my truck. Now that being said, there customer service is absolutely second to none. I cannot say enough good things about the service. I am pleased with the tuner and power. If there is something specific as far as an opinion please feel free to ask.