Not all Channel Wells are created equal, and I have doubts about that Turbolink because its power wires come out the side diagonally opposite the rear fan, while on the better Channel Wells, including the Antecs, are unusual in that those wires come out the other side.
Pictures in
http://www.ocforums.com/showthread.php?threadid=267035]this link show a bad Turbolink/Channel Well, while
this is a good Channel Well looks like. The circuitry is very different because the former has three transformers (one big, two small) because its controller chip is on the low voltage side, while the good one has just two, meaning that its controller chip is on the high voltage side (but that's not what makes it better; I mention it only to show that the products are different).
Leadman produces Powmax and Raidmax, and Robanton. Originally, Robanton was the budget brand, but now so is Powmax, which isn't to say that it used to be that good because all Leadmans have had trouble putting out their advertised power, only the old ones looked nicer on the inside.
If power ratings are always accurate, then why do so many cheap 550W PSUs have heatsinks and transformers that are no bigger than those in 300W Fortrons? Or why are the Fortron's capacitors just a large and its transistors and diodes rated for as much power and current?