BDs roast ECMs not hard parts:lol4: JK, they will both break stuff if you drive like a fool on high settings.LOL, your dealer said the BD was less agressive than a Smarty?
Ive heard of way more people roasting parts with a Bully Dog than pretty much any other box/programmer...
My .02, id much rather have a Smarty, and Ive had both(in addition to an Edge Juice/Attitude too)