Another suggestion: Consider wiring network connections to each opener. I have a nifty program on my iPhone, and I can remotely operate any door on my house that way. Comes in handy for letting service workers (or anybody else) into the house if I need to while I'm away. I have cameras inside too, so I can make sure they leave the cars alone! They call me when they arrive, and I can just push a button to let them in. It is all tied into my home security system that way also. I have 9 garage doors on my house, and I really didn't want to carry that many remotes around in each car, as I don't park each car in the same spot every time. This is an elegant solution.
If you don't mind me asking, what security system are you using? I just installed HAI/Omni solution. I also put in NioGarage which allows me to open the garage doors as well.
Thanks,
Lance