I have a programmer, sort of better than a chip in my opinion, because you can set everything back to stock when you sell it, take it in for service, or if you just feel like it. And all you have to do is plug a cable into your truck and change it without taking things apart.
Ah yes, but the chip is the same thing, just half the price! You can not do any more with the tuner then with the chip! You can still pull the chip out when you go to the dealer in under 5 minutes.