I have been reading the rules of ACKS, and I might well use it for my next D&D-ish campaign. Or I may use Héros & Dragons (french SRD5 derivative) instead. Or maybe AD&D2, or BX Advanced, or any random Microlite variant? How do you choose your system?
@nono - typically by playing the system attached to the setting. In the event that there isn't one or I'm doing a homebrew campaign, I typically go for the simplest system with the broadest range of mechanical/system based options for character types.
I don't do generics anymore, they've frustrated me one too many times.