Anybody had good or bad experience with LO-JACK?

I don't have the information you are looking for ... but ... consider that many contractors have LoJack installed on their site equipment (the stuff that's left on work sites overnight). LoJack might not keep someone from stealing your car ... but it will help you retrieve your car ... whether stripped, cut-up, or used for a joy ride. After someone stole my Father's 1996 Dodge Ram Cummins Turbo Diesel (no LoJack) (theft caught on security camera at work ... but too late) ... Dad swore that he'd never let it happen again. His 96 was replaced with a new 98 (with LoJack).