Having shot with both Leica M series cameras for years, and SLRs, I found that you make different images with the rangefinder cameras. It isn’t about the accuracy of framing, but the way you look at the world though the OVF. That’s why I bought a used X-Pro1, and shortly there after, a new X-Pro 2 with several lenses. (18mm, 23mm and 50mm). FWIW, the X-Pro 2 has a more accurate OVF.