Need a scan tool for more than just check engine lights, recommendations?

I have two cars with problems for which I need to have the computers scanned by software better than the standard DIY handheld OBD2 code readers. Instead of paying for each one to go to the dealer to have the codes read, and then back again to have them reset, it seems like it would be a better long term investment to get some software and hardware that can read this stuff now, and in the future.

Here are the issues I have and need to fix:
-06 Mazda3 with an ABS light on. I can't see anything wrong and knowing which wheel to concentrate on would be a big help. We have 3 other recent Mazda's in the family, so something that can speak Mazda would be handy in the future.
-03 Suburban with an airbag light. I have no idea. Something that can speak GM would probably be generally useful as they made so many cars, and this is probably readily available if I knew where to look. Secondarily on this truck I need to program keyless entry remotes and the hokey pokey of locking and unlocking won't get it into program mode, so I'd like to know why, but that's secondary to the airbag light.

So, what tool/package/whatever would you recommend?

I found this one: http://www.palmerperformance.com/products/scanxlstd/index.php

They have separate add ons software packages for both Mazda and GM. Total with the hardware and software with the Mazda and GM packages would be about $320.

I can't help on the scan tool, but on the suburban airbag issue; have you checked for a blown fuse? Ever put anything under the seats? There may be a wiring harness under there that can get jostled loose. Also a bad ground wire can cause that same problem.

If you have a smart phone the torque pro app might fit your needs. It has some plug ins that take its usability way beyond what I can use.plus you would need a plug in blue tooth code reader thats less than 15 bucks. ELM 327 I think?

What gunner said. They can read every sensor and show you the readout which is the major advantage. As for codes, it spits them out and you look them up just like any other.

Checked the Torque site, no plugins for either GM or Mazda

http://www.obd-2.com/

I have circled this from Alex Pepper for years. Guy is about as friendly as grizzly bear, and is site is all but geek-speak gibberish. But from what I've seen, it seems to be very powerful, and he is willing to work with people to expand the software.

foxtrapper wrote: http://www.obd-2.com/ I have circled this from Alex Pepper for years. Guy is about as friendly as grizzly bear, and is site is all but geek-speak gibberish. But from what I've seen, it seems to be very powerful, and he is willing to work with people to expand the software.

Awesome but unfortunately Microsoft windows only. I will have to see if I can run it in wine.

http://www.launchtechusa.com/

Have what looks like the best on the market, I had a chance to use one I loved it. And it is less than $200. Wish I had one