I had an Auto Xray and dumped it. They don't work on lots of Fords, they won't read fuel trims or O2 sensor values correctly. It would read next to nothing on my Explorer, it was basically a code reader because the program was full of bugs. To get the fuel trims to work you need to upgrade for "Ford enhanced" which is another $50.
If your family is all Ford, the DiagTek is the ultimate Ford scanner. The only downside is it works on Ford only. You will need a palm pilot, but it does so much more than most scanners. Most scanners read PCM information only, so if your ABS or SRS light comes on, it still means a trip to the dealership. The DiagTek can read ABS modules, Airbag, perform active commands, give full PID information for just about every sensor on the car, etc. It makes generic scan tools look like play toys. It's without a doubt the best Ford scan tool (other than Ford NGS factory tool) that I have ever seen.
If you need a list of which modules it will read, PM me with your vehicle info and I'll check for ya.
If your pleasure is laptop interface,
www.obd-2.com is very good. It reads PCM only, but it has other nice features. You can get this to read more than Fords if you buy the triple combo model. I have one, it's a nice unit, but I use my DiagTek more.