Cost me $85 in the GB and does a lot more. A lot more helpful in diagnosing problems. Just the fact that it shows soon-to-be (sorry forgot the real name) codes is a good reason to get it.
98.5 SVT
91 Escort GT (almost sold)
96 ATX Zetec (i brake to watch you swerve)
FS: SVT rear sway bar
WTB: Very cheap beater
CEG Dragon Run - October 13-15