I have a brilliant 1/4 hollow that I can do multiple passes with without needing a strop, yet whenever I use one of my full hollows I need to swap razors in the middle of the shave (don't have a strop in my hall's communal bathroom, so I take two razors in then swap when it gets too blunt). I'm thinking I may have to look at getting rid of some of my hollow grounds and getting a few more wedges to replace them just so I don't have to swap (the shave's easier and smoother with my wedgier blade too), but we'll see - funds will decide that one for me.