1.35 and 1.36 is same from my end as I needed a working version of a MediaWiki. As I do not contribute and update the projects version to version I thought it is safe to use a stable release. Dev versions may have issues in the core, which might take time to fix and will create blocks to my original objective of creating a new skin. But now I know stable release is not stable at all!
If you would say earlier to use 1.36, I will continue using that, as the plan of creating/ updating existing is to make it ready for the future versions. But again if I was doing a real project I would use the 1.35 and the project would be a complete failure.
Now I will try with 1.36/development release. Let see what is there for me.