The has worked real well for me, I'd say it's Great for those of us home (ShadeTree) mechanics.
Although I'm still learning how to use all the features in the Actron CP9580 scanner, overall it has been definitely worth the price for me.
I now check for the codes myself before I would take it in to the dealership that would charge $100 to just read the code! This scanner has paid for it's self already and my scanner has helped six of my friends find their problems also. The fix feature lookup is well worth the little extra you'll pay above the cost of scanners that just give you the code.
I would recommend this to anyone that wants to stop getting ripped off for service on their vehicle. I'm pleased with my purchase of the Actron CP9580 Auto Scanner OBD II, CAN and ABS Scan Tool with CodeConnect.
footnote: This tool is great as a stand alone unit, as long as you don't expect to use the PC interface to download and print the data or update the units firmware. Let alone on a Mac.