I've been using Advanced Nutes for about 2 years, never a nute problem ever (and I don't find their price to be that much different either)... however, My buddy's been using GH nutes, and his seem fine too, not really much difference in our setups or in the quality.. as a newbie just stick to the basics... around 5.5ph 700ppm in the first month, then 5.8ph and 1100-1200ppm the rest of the way... and you shouldn't have a problem...