I'm not sure you can get the SCT Programmer/Tuner anymore. It has been replaced with the SCT Xcalibrator, which only loads tunes. I am quite pleased with my decision to purchase a DiabloSport Predator instead of the Xcalibrator. After a month of comparing features, it came down to the Predator being more versatile and more inline with my current needs. The Predator comes with a semi-generic Performance Tune that improves performance and allows the user to make adjustments to many different settings. The Predator can also be used to log real-time data and it can read and clear diagnostic fault codes.
The Xcalibrator is a similar unit for $375 but is nothing more than a tune file loader with a few LEDs to tell you what is going on. It holds three dealer provided custom tunes in addition to your factory tune. It takes another $50 to get a cable and the QuickTune software to allow you to make changes to the tune. Without that cable and software, you are at the mercy of the dealer/tuner. The Predator provides all that right out of the box, plus the ability to read and clear diagnostic codes on any OBDII Ford, plus the ability to log real-time data, plus you can still receive custom tunes from the dealer if your needs exceed the default Performance Tune.
I have some pics and more description of the Predator in my cardomain thing.