There are some drawbacks to one piece doors. They are nice in areas where they can work.
I cold/snow country I think one has to heat the slab outside the door a bit to insure snow/ice does not block it from opening for first few feet of operation? And in snow country where the roof snow load is heavy, one has to beef up the structure to handle the one piece door. Hanging out there requires the load to be carried inside the structure.
Have never had one, but have seen the added structure to install one, far more than basic biflold type in winter country.
Benefit is they are clear opening, so not much lost space for clear height. But they do take more area to clear to open, and not great for partial opening until up high enough to walk under. Scare me a bit walking under them when open.
I have been planning a new hangar and just saw the Schweiss hyd door that is a tri leg free standing system, not attached to the main structure. Has its own footing to set the support frame on, so no stress /beef up required on the building. Good for retrofit too.
Have asked for costs, but sure looks like a nice option and good looking hinge system. Could feel better under one of those.
John
A note about the Higher Power doors... They go straight up for the first foot, thus avoiding most snow/ice issues. They are balanced, so they need no additional structure. You can retrofit a wood building. Yes, you do need some clear space inside your building for 1/2 the height of the door. They only take up their thickness in the rough opening, but you do need another foot above that for the first vertical 12" rise. (It's actually only 8" on the smaller doors I think). A 12 volt battery will operate them. I have one in Alaska (18' x 55' clear when open) and so far it has worked very well.