Ooh ooh I've been waiting patiently for this shootout, thanks Peevs!
It's interesting that there isn't a huge difference in performance between the tops, so I guess a big part of the decision will be whether you prefer clear acrylic or black delrin.
Laing recently made some minor updates to the DDC pump and PTS followed suit with their DDCT-01s top. If I had held off for a few months I would have the new versions.
The DDCT-01s represents a minor revision of our original DDCT-01 design, providing compatibility with the newer, blue impellered Laing DDC-3 series of pumps that are currently available in Europe. In addition to expanded compatibility, the DDCT-01s also provides slightly improved performance, with slightly reduced power consumption.
Source: Petra's Tech Shop