Advice on Purchasing Code Scanner

[j.fro]

I've got an Actron that I purchased back in 2005. It works great on my 00 986, but it doesn't work on my wife's 07 BMW X3.
I've seen OBD II apps for my iPhone, and I am intrigued.

I've also got the Durametric, and I am a bit disappointed (got it with my Softronic reflash). Yeah, it does all of the OBD II stuff, and I can reset an airbag light, but I was hoping for more. It allows you to test many systems by activating them with the engine off, but it does not permit permanent deactivation of anything. I need to disable the spoiler mechanism (I've got the Aerokit II, so all of the factory moveable spoiler is gone), remove the door airbags, and get rid of the secondary air injection. All of that is beyond the Durametric programing.