So let's stop and think of what we learned so far. Not all Breakout Box are identically designed...
1)
GW Instek along Itech-China, both
use the fancy power on switch (breaking current specification unknown), and both boxes design this scream
DC energy instead of AC.
The outcome its a bit confusing because the only output this is the AC plug.
Even so, they have better cable management, and they appear as more practical to use over the work bench.
From these two I would select the Itech with EU plug if there was one available.
2) Any Breakout Box this is
made of plastic, this is for
outdoor and or portable work. 3) From all metallic Breakout Box,
Chroma A662022 this is designed with higher level of wisdom, in favor of
AC measurements but no EU plug.
All four banana plug they have different color marking, and this is helpful for newbie power meter users.
Cables management this is terrible, all four banana plug wires along AC plug cable will cause weight unbalance,
not usable over a wooden shelf this be next to the power meter ( Rack-able concept).
Still usable over the work bench, but you have to hide it after finishing the job.
4) If non of these solutions this is according to your likes? There is always available the
DIY Way.