CandyLaser
Adventurer
My recommendations:
- Old School Essentials comes up a lot here, and indeed it is a very good, clean presentation of BX play.
- Just play BECMI, or pick up the Rules Cyclopedia if you want (almost) all of the rules in one book. Why reinvent the wheel?
- Take a look at the work of Kevin Crawford, specifically Worlds Without Number and An Echo Resounding.
- Modiphius's Conan, like a lot of swords and sorcery, might be too dark in its default setting but its rules are solid.
- HYPERBOREA, formerly Astonishing Swordsmen & Sorcerers of Hyperborea, falls into the same boat as Conan in terms of darkness but can be reworked into something lighter fairly easily.
- Tales of Argosa might be a bit too low fantasy, but it has great rules for martial exploits and a more modern (i.e. 5e-like) rules set than some of the other contenders.