I've got the Flatland skid plate and rad guard. I'm pretty happy with the setup. I don't notice any noise others have complained about, probably because if I do any street riding, I've got my Ipod ear buds in with some tunes playing. If I'm off road, I'm too busy paying attention to where I'm going. I put the Flatland rad guards on my son's WR250F and he took a spill a few weeks ago in the dirt. It wasn't anything significant but he did bend the rad guard back a bit. I had to work out the bend to get it back to normal.
Herkypilot