I figure it's like this;
I've decided for myself to stick with the drop-ins, and possibly do a gated later, because i still want to be able to change completely back to original percussion, and don't want to alter a fine gun to the point of no return. After that port is cut, you can't put it back.
I was jumping for joy when i first saw the gated cylinders, but now, I'm not so sure, when I think about it more carefully, that I want to use them extensively. It's good to have a choice though.