As far as a company goes karr is great... 24 hr emergency service, good quality alarm, replacement guarantee depending on which color (green system has guarantee), bright led and it integrates into your factory alarm.
Typically more expensive than a store bought
NEVER OWNED THIER SYSTEM BUT I Was admiring a VEHICLE THE OTHER DAY WITH A VIPER LCD REMOTE AND SPENT MORE TIME PLAYING WITH THE REMOTE THAN THE actual CAR... LMAO. VIPER HAS A GREAT REPUTATION AND THE FOB IS F'IN KEWL!!:thumbup1 1:
also its a blue light. anyone happen to know what the blue light does? i asked the dealership i bought it from and all they said was it had the shock sensor. im hoping it comes with other things too, like i said above, i dont think i have a factory alarm.