[fintstone]

I have installed many openers. I installed an I-drive recently and it was by far the hardest (although it is billed as the easiest), and the install was quite dangerous compared to standard openers IMHO. It would be well worth paying for an install. I personally prefer the screwdrive I installed in my other house, a Genie Excellerator...because it rises very rapidly compared to most openers. The I-drive also rises rather quickly and has a nice clean look. If I had a Wayne Dalton door, I would definitely use the I-drive...but probably not otherwise unless I had to due to lack of clearance....Even then, I would probably use an installer.