If you read the reveiws of these products you'll see that the good out weighs the bad. But you have to spend the dollars and get the better made products. Don't buy the 20 dollar cheap overseas brand because you'll get what you paid for.
I'm on the fence with the "torque" program. To get that, then the "bluetooth" device..... a little more and I can get a regukar code scanner that won't depend on a certian type of phone, and airwaves. For a few more dollars get a scanner.
Thats my 2 coppers.