The Remington 209 is a fine primer, except for two little problems. First, they have a supply issue. Sometimes they are simply unavailabe for months at a time. Second, they currently cost 25 bux a sleeve more than Win 209's. There seems to be no reason for either.
I gave up on CCI primers years ago when I was shooting mainly 1100's at skeet. There seemed to be hot stuff still coming out of the shells when ejected. This was most uncomfortable even when using good shooting glasses. Some sort of hot gas issue I didn't have when using Winchester primers.
The Cheddite also has the dishonor of being the only cap I ever had fire while seating. There was nothing under it, but the old 650 I had then was sticky and the last part of the stroke was pretty fast. I did get rid of the 650, but also got rid of the Cheddites.
My new 20ga Grabber is slick as can be... it loves WW209's.
