Comments:
Guards are nicely made, better then most, but are still way too thin gauge to withstand the elements, and they collapse into the gutter. They are too narrow (they don't reach under the shingles enough). They should either be made of thicker aluminum, or stainless steel, and be offered in wider widths.
Why is it that the industry in general makes gutter guards so cheap and flimsy, when they are to become a permanent part of a building, and are so hard to access for replacement? These guards are better made then most, but still not good enough! I double them up, but still they are not strong enough. C'mon, Kimsman, aluminum is not that expensive! The next time, I will buy 1/16" thick punched aluminum stock, and cut it to (wider) width myself! The plastic clips are total folly, and fall out (perhaps they would fit into cheap narrow gutters?) I drop deck screws into the holes after fitting them, against the inside edge of the gutter. This keeps the guard from creeping further under the shingle (doesn't fit under enough!) and collapsing into the gutter.
I rate "3" because it is better then what industry offers, otherwise I would rate "1".