Either one is fine. I like the round one that looks like a cartoon thought balloon. I like it for no other reason than it holds more caps. Many people use the bannana shaped capper. They are more handy if you wear them on a thong around the neck.
IMO, the Cash tear drop shaped brass capper which holds 100 caps is the best.
A close second is the one TC markets that is shaped just like Cash's, however, it's made out of strong plastic if that is any issue to you.
I have both...began using the plastic one at the range simply because it doesn't get dirty from all the handling...carry the brass one when I hunt with a caplock.
I.ve got both. They work fine. I like the banana shaped one hanging around the neck the tear drop in a pocket. A friend of mine had the TC plastic teardrop one and it tips caps. Got him a cash and no more problems. Cash cappers are the best on the market to date.
Fox :thumbsup: