Which Viper? And where to get installation?

First off, thanks for the speedy replies!

CC wants $399 for the 550 installed, just for price comparisons. They also claim they solder connections, which is good to know. The main reason I'm considering CC is that they have offices all over the place, so if/when I move, I will probably have a store locally that I can get any warranty work done (let's just hope I never need it, though).

I have a manual, so there will be no remote start for me, thus the factory immobilizer will not be bypassed, it will be in addition to the starter kill. This is why I'm looking at the 500 and 600.

As for the ghost switch, I think I need to hassle the guy more to find out why he swears it's a separate switch rather than using an existing switch in the car.

I thought the alarm could use the trunk light, but they gave no indication that it would. I guess I need to hassle the guy about that, too. So what's the deal with the mercury switch? Is it based upon a physical or electrical contact, or is it based upon some other method?

DEI claims that the alarms have remote valet as a standard feature, press 1-2-1 on the remote with the door open and it should switch modes.....or so they claim.

b