Well, first things first because I feel I have to show I have real world experience with both steels before I start swimming against the tide here
In my experience, S35VN (and S30V) keep a razor edge about as long as Elmax with the noticeable difference being the fact that both Crucible steels seem to keep a far better working edge once that razor edge goes. They also seem to respond better to stropping to maintain an existing edge.
Elmax in my experience goes from hairpopping to completely dull much quicker. Sharpening is a different story though. I find that Elmax sharpens more easily than S30V. S30V fights you. S35VN sharpens somewhat better and I'd rank it just under Elmax on my Sharpmaker.
To make things even more complex, out of all three steels S30V seems to handle cutting harder materials best. I can cut electrical wire with my 0301 and the edge doesn't seem to give a damn whereas my 0550 didn't feel flawless anymore when running my nail along it's edge.
All in all I prefer the longer lasting working edge on my 0550 to the Elmax on my 0801.
Elmax may be the better steel on paper but hey, on paper Spain is an ex-world champ and they're packing their bags in Brazil as we speak