Hello , looking for some first hand input from the group . Xe1 owner here , looking to add a body either a new xp1 , used xp1 with all updates or an xe2s . I watched a video by a pro fuji x photog. who says his new xp1 is a good bit faster with more accurate focus than his updated x100s. Has questions as to whether the newer xp1 bodies actually have different hardware beyond the new firmware because it has advanced so far from the original xp1 he had. Do we know if an older updated xp1 will perform as well as a new xp1 body and how either performs compared to an xe2s. thanks in advance for the input..