i like my sr 6000 more then my viper... my sr6000 tell's me the inside temp of my car.. has a alarm/ time start.. i programed it so it start's every morning at 8:00 by it's self... and a bunch more...
and viper is made by dei which also includes prestige, avital and I *think* clifford. 'viper' is just a marketing gimmick to pay more for the same thing other companies sell cheaper who also use DEI.