Steven Winter
Explorer
Since I still have most of my 1981 D&D B/X material, that's my go-to old-school game. If players need rules, I steer them to Labyrinth Lord and everything meshes fine. I like the simplicity of Swords & Wizardry and I play it every chance I get, but as a DM I prefer the more developed version that became B/X over OD&D. I swap B/X, LL, and S&W monsters back and forth without batting an eye. (I even use the S&W Monster Book with D&D Next, just by running some quick mental conversions on the numbers.)
Steve
Steve