I am like Spikey, 7 or 8 I think.
Any new projects I start will be with the latest stable release, currently 3.0
then I stick with the same version through that project.
actually I just checked I have 9.
2.8, 2.81, 2.82, 2.83, 2.9, 2.91, 2.92, 2.93 and 3.0
on my old laptop I still have 2.78 and 2.79