usually 11x14, sometimes 16x20. I like sharp prints so much of the time bigger prints don't have the detail I'm looking for so I go only as big as I can. That was with a 4x5 enlarger. Now that I have my 10x10 set up I plan to do some larger work until I run out of money. I'm going to try doing them in my 3063 jobo drum and wallpaper trays. Washing becomes the issue so I may make one large tray from 1/4" ABS.