We should not argue about what is the BEST grow style, NASA done this for us! 5-50 micron mist in a large air space............ (You cant argue with them boys till YOU put a man in space, they spent milions of pounds in research and built a place called the epcot center to show there grows)
You can argue that it is not best for EVERYONE as lots of people use mud because they cant/wont/dont strive for perfection.
DWC is among the better hydroponics but is not even in the same book let alone on the same page!
There are NO high-preassure grow systems avaliable that are suitable unless you are in the trade and these are stupid expensive and custom built,I dont think there WILL BE any because as far as im aware NASA's partners own the patents and aint gunna want you to grow weed wiv em!
Anyway back to trying to regulate water pressure for cheap. (Come on fatman I need ya help!)
I found this,
http://www.esska-tech.co.uk/cgi-bin/esska_eng/iboshop.cgi?showd10420!0,966728474475496,irXmsirXes00 but its $656 I was thinking about $100 would be a good price. +million rep for anyone who finds a cheap one!