BigMac is 100% correct,it comes down to if you want a tune based on your vehicles mods and simplified and sets its own parameters to self adjust for example cat back and cold air go with LMS like i did,if you want to do datalogging and tweaks here and there then go with someone else,honestly I was one of the first to get the V8 LMS,DP 170STAT,3-BAR TUNE early this year and couldnt ask for anything more.