Ok; I have been tasked with finding, buying and installing leaf guards on our rain gutters. I was wondering if anyone here had any experience with the different types of leaf guards, and what you thought of them. We have asphalt roof shingles, we have 2 or 3 trees with big leaves that drop onto the roof, and we're talking about Syracuse NY, so we have seen the odd snowflake or two...billion. Anybody been down this path? Got any suggestions, either pro or con?