After a quick look at Consumer Reports and an in-person inspection at Zingers, we decided to get the Tesla of gutter guards by going with GutterGlove Pro:
These babies are made of aluminum with a stainless steel mesh on top. They integrate best with metal and composition roofs (that long wing there goes underneath the roofing) but our installers (Austin Gutter King) also get it to work with TPO. And they have a nice, finished look about them that complements Modern construction.
The stuff ain't cheap, but it looks good and, thus far, seems to work good. We'll still need to go up there and brush off the screens once a year (or hire someone to do it), but we feel good that these puppies will do the job and last a long long while.
The gutter for the garage with Gutterglove Pro installed. Since we don't have a proper first-flush for the rainwater harvesting system, these gutter guards also serve as an excellent filter for roof debris.