I got the Echo 2, made by Omega. I'm sure there are better ones out there, but that was the best one that the alarm place carried. I'm definitely not dogging any other alarm systems, because I don't know anything about alarm systems. I just hope it scares off the losers that try and mess with it. Even better, it alerts me so I come outside with my 45 and big dog for them.
Anyway, it does have the tilt sensor, so if I gets towed, I'll know about it. As soon as the GPS comes out for it, I might add it on.
I'll let you know if I have any problems with it. So far, it's been a nice addition.