I am getting my camera (5d3) replaced and have the opportunity to sell the replacement and get factory refurbed 1d x for $3900 or spend $1600 more to have 2 5d3's so I will have a backup. Just not sure if I should jump on the 1d x since I have lived this long with 1 body or get the 2 5d3's. My main want is stop better iso performance, customizable ae adjustments, more accurate metering. Just looking for people who have both to give some insight. I do like the smaller size, silent shutter, lower weight but want a tool thats best for the job. So far events and portraits are all I have done. Also landscapes and macro.