A Sys1 with a drawer. I would buy one for my C12. Perfect for drills and accessories. I have used a systainer with the top storage lid. Not worth it, not enough room (I want to put a drill index in it that goes with me and the drill), or have other accessories in it, like common hole saws, etc. And the lid was an issue due to a broken latch (too fragile for the way I work).