Everything I own is either MAC or Snap On with the exception of the small Craftsman kit I keep in the car. The quality of my Craftsman set has suprised me really, I've used it on several occasions and never had any problems. My grandpa has some older Craftsman stuff thats hard to beat with about anything. I've never been a big Kobalt fan, but I dont have enough experience with them to really say anything bad about them.