I have had great results with my Tweecer RT.
If you think you will enjoy learning how Ford tuned the stock car, then the tweecer is a good bet.
If you just want to make the car run better with as little time required for tuning, then maybe the pms would be better?
I like the way tweecer rt datalogs.
dont' forget a wide band O2. The Lc-1 from innovate is $200, and prices go up from there...
To help you decide if the tweecer is a good choice, download the software from the tweecer site and the manual.
The manual was recently updated, and is a lot better...
jason