I'm teetering on the edge of dishing out some serious money for a Sony A7 RIII at the moment to replace my ageing Canon D60. It's not that my images aren't good, I'm pretty happy with most of them, but I do feel that I miss some due to slower focus and inadequate low light performance which are two of the things that seem to have improved massively in the last few years in all camera ranges. Just need to find the money to take the plunge.