About a year ago I was looking for one of them and decided to go a different route. If you have a laptop of PDA for $200.00 you can get much more in the available software than in may tools.
Here is what I got:
http://www.autoenginuity.com/

you can get them on e-bay for less:

http://cgi.ebay.com/ebaymotors/Auto...itemZ300118411553QQrdZ1QQsspagenameZWDVW

You can read and erase codes in many cars. Also as a standard you can monitor multiple sensors, more than any standard tool will do.

The mighty oak tree was once a little nut that held its ground.

2000 Trooper LS with TOD
ARB bumper, custom roof rack, 33" BFGoodrich AT, K&N, OME springs, Aisin hubs, Rancho 9000, WARN XD9000, Maxi-Kool Tranny Cooler, Optima Red,