(I can't believe I'm actually posting a "versus" thread. Usually I'm allergic to gratuitous versus threads. But at least it's a reasonably legitimate comparison.) It looks like the main differences between the two is the X-Trans sensor on the X-M1. Looking at dpreview comparison photos, it appears the X-M1 offers incredibly lower chroma noise, with some loss of fine resolution. The difference is apparent even in raw files compared with the X-A1, Nikon D7100 and other relatively comparable cameras. Has anyone here had an opportunity to try both Fujis in a variety of situations to determine whether any real world differences are apparent enough to make a difference? Both models are reasonably priced now, but the X-A1 is about $100 less. I do a lot of low light and nighttime available dark handheld candid photography, and about a third of my photography involves landscapes and static subjects in dim available light - usually late afternoon and evening, sometimes at night. So high ISO noise is a factor. I'm going to trade an underutilized shift lens toward one or the other. I've pondered a couple of alternatives, including a good used Nikon D90 or D7000, which would be compatible with my existing Nikkors, but to be realistic I'd get more use from a smaller, lighter mirrorless model with optical stabilization. Recently I've dragged out the F3HP and FM2N again with a tripod and realized my physical limitations make the old familiar methods impractical. A smaller, lighter mirrorless camera with tilting rear screen suits my preferences better now, even for landscapes and static subjects.