oh where do i start. I shoot mostly on a 5D Mark 2. I own a 24-100, which I hate. a 50mm 1.2L, a 90mm 2.8 Leitz, and a 100mm macro.
I also shoot medium format. Mostly Phase one P65+. Either with a hassleblad H2, 50mm, 80mm or 120mm macro. But I prefer the Mamiya RZ with a 75mm, 50mm floating system lens. Because of the format difference, the 50 becomes more like a 75mm and the 75 becomes more like a 90 or 100. if I need anything wider, I go hassy or just shoot with the canon.