We currently have those 2 ft long white plastic gutter covers that clip to the edges of the gutters and slide under the shingle with perforated holes in them (purchased at Home Depot). They're very effective in keeping leaves and branches out of the gutters but do nothing to keep dirt/mud from piling up inside the gutter.
Consequently, the gutters now need to be cleaned out to get all the mud/crud that's built up over the past 2-3 years. Normally, I wouldn't think it's a big deal to clean them every 2-3 years but the way our house is built, it's a major PITA to get up on the roof and clean them.
I've seen all kinds of gutter covers advertised that tout that they're the best/affordable however before I put down any money on any particular system, I thought I ask if anyone here has had any good/bad experiences with any particular type of system and also if anyone has any recommendations on a good cover to install.