The Bar Towel

Is there any advantage either way, of using the slotted copper tubing and mashing in a cooler (as grub is doing, and as my friends and I have been doing), versus a stainless braid system like that easy mash system? or a false bottom in our converted keg?

I've always had great results using a cooler with a slotted copper manifold. Definitely better than the bucket with holes in the bottom I started out with.