There were some G-techs on E-bay for $36, and now I see why. The G-tech is a one-axis accelerometer, and it only gives one readout per test run. That means if you want to get 0-60 and HP, you have to make several runs in each direction for each test. (Several runs are recommended to average out "real world" errors.) It's also (supposedly) a bit of a hassle to get it mounted and calibrated correctly.
I think this Escort unit is still a one-axis accelerometer, but it looks like you can get several measurements at one time. It also sounds easier to calibrate, and perhaps more accurate?
The downside to any one-axis device is that if you want to get cornering G's, you have to remount the unit sideways. But, like I said, I'm not sure whether the Escort unit has this fault or not.
