amurdag1I only own a few SP caps from a grab bag, also own Domikey Cyberpunk. I can say that they feel amazing. A bit shiny out the box, but quality is good. Compat is also good. Unfortunately this set doesn't come with 40's compat, but it does have compat for my older keebs, like my dusty Corsair Vengeance K70.
GBNThe legends have different thickness from kit to kit (international vs alphas for example)
but they're nice. I've got like 20+ SP sets and just a few domikey sets so far. I'd get these if they had international/NorDe kit.
So, overall:
SP = More expensive - but better
Domi = Cheap-ish - better bang for the buck-ish xD