In my experience, no, they're pretty hopeless.
I fitted a set to my old car. I didnt expect them to last as long as the original parts, but expected a few years at least.
They lasted 4 months, before they were creaking and groaning and knocking. There was more play in the balljoints of the set i took off after 4 months than there was in the original 12 year old arms!!
They also managed to totally destroy the front tyres as the play in the arms allowed the toe angle to change randomly while driving.
I'd recommend either lemforder (who make the OEM arms) or Meyle, whom i've used on a few cars now and they've been fine.