K-Guard Is the favorite after checking reviews nationwide. https://reviews.allreviewsites.com/k-guard-leaf-free-gutter-system-593901696 Talking with customers. Cost vs. Risk is amazing as you never have to service a K Guard gutter system. If you think you have something slipped into the gutter they come out and check or clean it for free. Our only KGuard complaint is it could be even bigger but hey no gutter is 100% perfect right?
Gutter Cap has been around for decades and makes a smooth metal gutter cover. It like most Helmets, Toppers, Or Covers mounts under shingles. Stone Coat Gutter Roof or Guard is by far the best service tension product on the market. The one downside is it mounts under your shingles.
Leaf Guard Guttering. Has been around since the 90's. The concept was very smart but lacking size and support of the gutter trough. They also are usually the most expensive gutter system on the market. Only one of two complete gutter systems we are aware of. We did find tons of negative feedback on this product.
Leaf Filter is just that. It filters leaves really well but in our research we also found out it has issues of acting like a shelf for debris to sit on. They say it will blow off but in our experience it doesn't. If you want a gutter that never clogs but still have to get the ladder out this is you protection you need. Love the youtube video of their customer- A REAL LeafFilter testimonial - you owe it to yourself. Also best gutter humor ever.
Smooth finished gutter covers, helmets, or toppers. Almost every roofing company we interviewed said stay away from this. It not only voids roof warranties from improper installed gutter and downspouts(The clause in leading shingle companies warranties). Another product rates terrible online.
You'd be better off just paying for gutter cleanings without putting this product on. If you do put this guttering screen on your price on gutter cleanings go up as gutter companies hate cleaning gutters with this on you house.
Gutter Foam, or Sponge inserts can be bought at almost any big box store.