One advantage to the Foys is that the power supply is just a couple of AAA batteries, which last months - I haven't had to replace them in 6 months. The other units require some kind of power supply, which could be more difficult to manage (e.g., needing to run AC power or buy expensive 12 volt...
I went with the Foys opener and door, though at $240 (including door) , its a bit pricier option. I hadn't seen these other options in this link when I bought. That being said, it has worked very well for the last 9 months on a couple of AAA batteries. I might have tried the $79 option if I...