I just switched over to Advanced recently..... Its very expensive for a reason.... the stuff kicks major ASS... My yeild almost doubled easily... As fas as quality.... It is stinky and sticky, and knocks youon your ass... It is however VERY important to use Final Phase (during that last week of flushing), and to flush WELL... This makes the way it burns and the taste ALOT better.... Remember, Advanced is not Organic, its Synthetic, so you need to flush out all those Nutes so you dont have harsh taste, and so it burns to grey- not black... I was happy with what I was getting with Soul, Fox Farm, or House and Garden etc.... I never could grasp the concept of spending a thousand dollars to use Advanced.... But once I did.... I will never look back. Anyone who tells you that Advanced isnt worth it, cant afford it... You get what you pay for, and advanced is the SHIT... I went all out, and did the Grandmaster Schedule, with the 2 Part Sensi Grow and Sensi Bloom for my bases... Its easy, and shows results IMMEDIATELY... Why am I ranting?? Cuz I just made the switch and got an elbow instead of an 10 pack.... Coco, Temp control, and C02