My old-school D&D stat gen method

I find 'roll & assign as desired', the default in 1e AD&D, a very bad way to create PCs, it's basically 'variable point buy'. Default Array & Point Buy work best for the 3e/4e/5e attribute mods systems. But for old school D&D I now use an 'assign when rolled, default to in order' system where each number rolled is then locked in to a particular stat (eg the first roll either goes to STR or is assigned to a different stat, then 2nd roll goes to INT or one of the other 4 remaining open stats).  So the final attribute rolled is always random - this is often CHA, since it's at the end of the STR INT WIS CON DEX CHA line.