Occasionally, I find myself using a ballpoint pen. When I do, I prefer the Caran d'Ache 'broad'-tipped (they call it "large") monster refill. Unfortunately, I do not like the skinny design of the lower-end Caran d'Dache ballpoint pens (the 849, for example). Are there other brands of ballpoint pens that accept Caran d'Ache refills? I would prefer to use the Caran d'Ache refill in a more substantial (=fatter) pen. (I would bet Caran d'Ache makes a fatter and much more expensive pen, but I am not crazy about spending a lot on a ballpoint pen. Doing so would take away from my fountain pen funds.) Alternatively, are there other ballpoint brands that offer high-quality 'broad'-tipped refills (Parker or other style would be fine)? I have tried the Fisher Space Pen 'broad' refills and am not too happy with them. I guess I am looking for a ball point tip that is closer to a 1.0 rather than a 0.7.