I use the tailwind iq3 - about $90, but it opens my garage door automatically when I approach it on my motorcycle (or car - can create different pairings), and closes the garage door once I leave - works well
 
I have the doormate 2 also, but I have it oriented down to keep it more hidden so it doesn't work as well as it should. My other bike is a Sportster fitted with the HD garage door opener. So this past weekend I got another transmitter and did some backyard engineering, and viola! i can now flash the high beam to operate the garage door
 
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