I am very impressed with these pickups. For less than €100 they give a great 'strat' sound and I believe that most people will find them to be pleasing.
I chose these over the 57/62 and other premium pickup options partly because of the significantly lower price but mostly for the reverse-wound, hum cancelling effect in positions 2 and 4.
Installation was easy - generous wire lengths and a decent wiring diagram were nice to see.
My set arrived with a defective neck pickup. Usually I would put this down to bad luck but I read a few other reports with similar concerns, so I thought I would mention it here. I did manage to fix it by heating the solder connections and then letting them cool, which suggests that it was just a bad solder connection from the factory.
So my general conclusion would be that they sound great but I do have concerns about quality control. With this said, I don't think that it should put you off, as they sound great and at less than €100 are excellent value.