I have no idea whether the Gemini block out-performs the MAZE2, but I did notice one design difference. From the CAD drawings on the site, the area that sits on top of the core is the comma-shaped beginning of the channel wall. The MAZE2 has the beginning of the channel over the core while the Gemini has 12mm thick copper over the core. Is this correct?
--Rob
BTW: Wasn't this a thread about Swiftech?