Teng are not that bad, and seem widely available now, but they insist on the crappy rough matt finnish on their sockets, which i think lets them down a bit.
Ive got all sorts in my tool box from Signet, Palmera, (spannish snap on? so i was told by their rep)
Mac, Britool, Bluepoint, All of which have never let me down.
I was lucky enough (or unlucky ) to have been in the motor trade for 14yrs so had reps come in,
But the man on the street seems stuck with the likes of Drapper or just cheap and nasty tat!