From a designer's perspective, the lack of a center inlet, has got to really hurt the performance. This Maze4 is actually a step back, as it's now down to a simple side to side flow configuration.
The side to side flow configuration only has one advantage: it's the least restrictive. The problem is that the added flow can't make up for the simplicity of the design.
It reminds me a lot of that French block, who posted that again?
http://forums.procooling.com/vbb/sho...&threadid=5731
That french design is actually superior though, because of the added turbulators, and all the tweaking added to it.
I have to agree: there are better blocks out there than this Maze4, for the price. Better luck next time, DangerDen!