I have a Bullydog with Crazy Larry on my truck right now, I love it, I also just bought a used Smarty off a friend. they make similar power, smarty smokes alot more, with the TNT program it out runs my crazy larry. My answer to you would be, what are your intentions with the truck? If your just looking for a little extra power then both will do, if you are like me and have injectors a bigger turbo, and a fass then the smarty helps out more it seems.
My Triple dog is about 3 months old and it is for sale if you are interested, it currently has Crazy Larry downloaded to it. I also have the Out look monitor which I do love that I would be interested in selling also..

opcorn:

opcorn: