When I first began smoking a pipe, I was into large sized bowls ODA's and bigger. I then progressed into liking a little smaller pipes that were large group 6's. When I came back to my pipes this May, I bought some pipes that were large 6's and a couple of smaller 6's. I then began collecting some British pipes and they were all either large 5's or regular 5's, except for my two Ferndowns that are group 6. I am now really liking my group 5's and am going to focus on buying that size for a bit. I have found that for flakes, group 5's are best suited to me. I have also become enamored with lighter pipes in the 40-55 gram range. They are so much easier for clenching and I find myself clenching more than I ever have. I still smoke my larger pipes, but I find myself reaching for my smaller and lighter ones more often. So what sizes do you guys like and have any of you changed sizes along your journey?