I am very interested in the x100. Heard a lot of good things about it. I primarily want it for street photography and love the small size so as to be more discreet. Todays DSLRs and lenses are huge and stick out. Right now, I have a canon 50d and plan on upgrading to a 5D Mark II or III, depending on what I can afford. Because of this, I don't think I necessarily need the ability to swap out lenses on it. That makes me lean towards the x100. I think I will also keep my 50d and convert it to IR, just for some fun. My question is, does the X-Pro 1 offer anything other than different lenses and more MP that would make it worth the price difference even though I will have another full frame pro level DSLR?