[Apex944]

Well, im just looking for a little adjustability which is why I want the 1.5 and then the 1.7 . It only costs $10 or so to upgrade from 1.5 to 1.7 . That'll let me have some fun for a while and keep things simple.

The 2.1 is cool, but if im going to spend close to $600 on something that is somewhat adjustable I might as well go to the next level and get the Apex'i Power FC. I know a few people who are running the Power FC and they love it.
Plus the Power FC uses a 3 BAR Map sensor in place of the AFM which is a big plus for me. Barn door AFM's are garbage.
The 2.1 Rtek still uses the AFM for an airflow input, which I want to get rid of ASAP.