Thats just bs IMO. We all try to experiment with the cheapest and always and i mean always end up getting the top off the line thats just the way it is ,especially in a hobby such as this one when a minimal error can cause a disaster-economically and so forth. Anyways i've tried multiple Ph's during the years, the most recent MJMODS1200 x 4 by far the best DYI as far as flow and so forth. But If you can get a piece of equipment thats worth every penny and is backed up by excellent warranty why not in a hobby that U pay 10 bucks for a pound of rock LOL. CmonIf you're a money bags, go with a tunze