There is probably not a guitar in the world that has been played by as many people as the Fender Stratocaster. And hardly any other guitars allow for such hardware flexibility and DIY as the Strat, so it should come as no surprise that Fender offers a huge range of different pickups.
Fender single coils have a fantastic sound, but also a tiny flaw: they hum. High gain amps, light shows, etc. may suffice to drive some guitarists crazy. For sensitive souls, Fender has developed the Noiseless Strat Set - pickups without unwanted noise - whose basic sound is still sound rather vintage, plus a little louder and more balanced than the original.