best = phantom tracking. they monitor your bike 24/7 if the bike moves, they call you. if you get crash, they call ambulance. dealership needs to install this. very expensive + monthly payments (10-20 bucks for the monitoring service.)
easiest to install - scorpio alarm which is very user friendly (at least for me). i have one in my r1 and its good. range is not great if you have a lot of buildings around you. get the whole shbang - permiter sensor ,ignition disable etc etc.