beat to death!

I guess if you have a new truck you don't care about the subject of brake controllers! I have had several and the most disappointing is the Tekonsha P3. I have sent three of them back and they have sent me three replacements. I swear this thing has almost killed my wife and I. If it wasn't for the brake handle on the controller we would have been in a wreak. I have gone over the setting with their tech department and nothing seems to work. Its not the pickup or the wiring or fuses. I have put on a cheap one and when set on a high mode it will put you thru the windshield. My 5er has disk brakes and I want your opinion on what is the best brake controller out there. Any thing besides a Tekonsha, that will never be in my truck again. If any of you have a Tekonsha, I hope I didn't step on your toes. It just doesn't work for me. Thanks!