I've got one of these (Squier Indonesian P-bass Special). I used the standard pups for a while - they are actually not that bad. However a couple of weeks ago I swapped then out for a P/J set of SD QPs. 10 minute job with the soldering iron, straight swap, no fettling required and the sound is now HUGE. The output on the SD pups is so hot, I've had to lower them a fair bit to get them somewhere close to the output of my other basses.
It's a gorgeous bass that still only stands me at about £250 all in