For those of you who have purchased a 1D X, I'm curious as to why? What makes it worth it to you?
For me it was a combination of mild disappointment with the 5D3 spec and the desire (and ability) to have the best I could.
Don't get me wrong, I think the 5D3 is an exceptional machine, but I wanted a bit more from a 5D2 upgrade and the 1Dx fits the bill. It is a no-compromise system with a pro build, the absolute best AF system available and the best ISO performance as well.
I was saving for the 5D3 and had a bit of a windfall that allowed me to reach a bit higher. I considered the 5D3 when introduced, but it wasn't enough to sway me.
What other upgrades were you looking for when you went away from the 5D II and were considering a 5D III? For me, the AF improvements (drastic), plus being able to do AUTO ISO in manual mode at all possible ISO values, HDR, and Multi-Exposure, I'm not sure what else there would be as an "upgrade" without completely crossing into a different camera line. In fact, I don't know how they could have possibly upgraded the 5D Mark II any more than they did. I wish it had the color rendition of the 1Ds III at low ISO value. Maybe I'm just wishing there were a 1Ds Mark IV