Similiar 561t's?

Wondering if there are any Remote Start units like the Valet 561t's.  This unit is the only one that I know that remote starts vehicles using +/- inputs thus far.  Are there any other units with or without remotes that can do this? 

Thanks, Sean

What I'm looking for is the ability to use the OEM transmitter to do the remote start.  If there are other remote start units that can take a outside trigger, I would like to add that in consideration.  I do like the Viper 791's but with a single 2 way remote, that leaves out letting others use the vehicle without the remote.  I wish the 791 allows outside trigger to disarm & remote start the vehicle but probably too much to ask.

As for my daily habits, the vehicle is never more than 1/8th of a mile away except when garaged at home so security is a low priority while the remote start is.

It would be NICE to know the status if the engine's running or not, etc which makes the 2-way attractive as it's impossible to know if the engine's running out of sight without it.

Sean