Still using the old school. How much would you be using it? If you're constantly playing, it might be worth it, but the last I looked, the good ones were a little pricey and didn't buy you anything as a DIY repair tool.
Ever notice that there's so many high performance parts available for GM products?
I found one on internet for 80 bucks that supposed to be a dianostic scanner and a programmer that you download to a lap top its call auto doctor. you just have to go to amazon or ebay and by the usb to odb plug.