Bought a used 40D body from Adorama. Thing is in such nice condition I'd swear it was brand new if: 1. They hadn't advertised it as used, 2. It didn't have a 14,600+ shutter count (with which I'm just fine) and 3. The sensor hadn't needed cleaning: Give it a few vigorous shots with the Rocket. Got some of 'em. Let's see what the The Dust Patrol brush can do. Ok, well... both success and failure. Try that again. Nope. Ok: Dry swab. Stubborn bugger, innit? (Btw: Those are clouds in the upper-right.) Ok, wet swab. So close. So close. Again. Yikes! And again. Tah DAH! There are a couple very faint spots remaining in the upper right, but I'm calling this good. If I can just barely make them out with this, at f/22, I doubt they'll ever affect any shots I'll take.