Joe, I'm sure liquidsquid has his own rationale, but for me it was because a very helpful forum member had lots of experience with soilfloc and gave freely of his time and expertise to help me through it. I figured after 100 projects or more with soilfloc he must have had a reason to continue to use it and to help others use it. His success rate is good, i suspect if he understands your exact situation and helps you, you will also be a believer. I have no experience with the other product and I don't think others on this forum have mentioned using it before either. Perhaps we are just ignorant of the pros and cons of this alternative product.