well auctually they both clog,since they are the same design the only difference is how water is deliverd. if u run drip u dont really need drippers at all,only if your pump is really under powerd and u need that back pressure to compensate to the other feeder lines.i just built a dope 24/7 top feed drip /nft system and i will not be using any dripper heads this go around.if u do decide to go with either system that uses plastic drip/spray heads i suggest using 1/4 super flex tubing from a hydro store because if u need to pull them and clean em its 90% easier than using that hard line stuff. and they wont break when u pull them off.