100% skyblock!!! it puts some limits to the infinite resources of survival mode... and its survival, but in a different plot and u choose what it will look like^^ even if that does mean to ride a chicken... ??
Skyblock with survival coming in a close second. I would play more survival, but 1. I can't find a town that would encourage me to play there more and 2. I can't build to save my life. =p