We have lots of oak trees. We saw a demonstration at a local wine festival and I liked what I saw.
After working the numbers and being convinced that I would never need to climb a ladder again, we had our LeafFilter installed this past summer (2017). During a normal rain fall, I noticed water running over the top of the gutter on one of my inside gutter corners and onto my deck - see video. After the rain stopped, I investigated the problem and found black gunk covering the micro-mesh screen that prevented the water from entering the gutter. I contacted service and the guy told me this is a known problem that nothing can be done to fix it, except to periodically climb up a ladder and clean them.
This is why I bought this product. I would not recommend LeafFilter if you have lots of trees and inside corners like we do.
Review about: Leaffilter North Gutter Guard.
Reason of review: Bad quality.