If I'm looking to replace the pots for my Ibanez S guitar, do I need long shafted pots, or will the regular ones do?

Also how reliable are the electronics sold by guitar fetish?
depends how deep the holes from the top to the inside of the cavity..
if the pots you have in it just now fit ok. use them or change for new ones with the same length shaft..
if you go for the longer ones. you can always set one of the nuts to stop the pot from pokin out too far.