Rhino Gutter Guard

Rhino Gutters Guards was waste of money - ($750 for 108 linear feet) They have a 20 year no clog warranty - but they mean the gutters won?t clog, not that the mesh screens won?t clog. 
I encountered 3 problems with this design:
First: 
I have a sloped roof with valleys - as water comes down the valleys, it cascades over the corner mesh screens and onto the deck or ground below. 
Second: 
Even a very small amount of sand, grit or debris on the mesh prevents water from flowing into the gutters and causes overflow onto the deck or ground below. I would have to clean my roof several times a month to keep it clean enough to prevent a modest rain from depositing debris onto the screens and causing overflow on to the deck or ground below. 
Third:  
The diverters initially installed to slow down the water in the roof valleys clogged with small amounts of leaves or twigs, and didn?t stop water from cascading over the gutters and off the roof. The newly offered mitre corner pieces Rhino recommended as a solution for corner overflow didn?t fit my gutters. They are intended to provide a larger corner surface to allow water to seep through the mesh. They are unattractive to boot.
I attempted to contact Rhino several times to address issues with their product. I was able to speak with the national installation manager Scott Smith twice, but most of the time my calls went unanswered and my messages went unreturned. Rhino said since the gutters themselves didn?t clog, there was no warranty issue. Scott did offer to send an installer out with corner miters to fix the corner overflow, but they didn?t fit, and subsequent calls went unanswered.
I gave my Rhino guards to my yard maintenance person, who said so far they do seem to be helping somewhat with his particular installation. Since he got them for free, he?s not complaining. I?ve decided to go back to cleaning my gutters the old fashioned way - it?s much less trouble than climbing up to clean the roof several times a month.