Sorry about starting a new thread for trite stuff, but I searched through a bunch of threads and just got bits and pieces of information.

So i'm looking for definitive answers:

If I know it's not the MAF or IACV, then it'll be moving on to replace the o2 sensor. I'm not trying to buy something and then not have it fix my problem, and since it's inconsistent, there's a good chance I could take it to my mechanic and it wouldn't stall. Any additional input would be most appreciated.