I like the programmers. I can turn it to 40 /60 / 80 / 100 (I think) and I can run codes and clear them as well. I put mine on the big setting once and couldn't tell enough difference to use it over the "TOW". But when I go to the dunes I will be using that BIG DADDY. I have a predator. But its the only one I have ever had. I would suggest name brands also. don't get on ebay and buy some 30.00 thing, I have heard to many horror stories. Go with bully dog, predator, banks.. someone that's been in business a while.