PC Diagnostic Software Auto Ingenuity

Does anyone have any recommendations on some diagnostic software to buy for my PC? Are some much better than others? ADV/DISADV ? I will be using the software to it's potential of diagnosing, so a reader will not do. Thanks in advance.
Auto Ingenuity--Auto Tap. Some time searching the internet will yield many results. Post links back and we can review them for you. Those 2 I listed are very popular.


Being way2old is why I need help from younger minds What about Auterra? http://www.auterraweb.com/ This seems to be a good one that I came across a lot. My main concern is the capabilities of the system, and also getting updates and such in the future. I just want the best system for the money. I saw the two that you mentioned in doing my research... they do look like good programs, especially the Auto Enginuity. Have you used any of the systems? Thanks again!
I haven't really used any of them I have manufacturer specific software for the ve3hicles we work on. I have heard good things about Auterra also. If you are looking for bi-directional capabilities, the price has really jumped. To do all the functions a manufacturer's tool will do(or get close to what they do) the price skyrockets. To see if it haqs bi-directional capabilities, look to see what output states you can do and what you can turn on and off. Good luck.