>>107034652
Years ago I went the DIY-ish route like in this video https://www.youtube.com/watch?v=QxR-_ZnREQQ (I miss that Swiss accent so much ;( )
Setup is a bit clunky as I never polished that project: I would need to create some wooden box to make the stuff more rigid, compact and portable (and safer!), it lacks a switch (and maybe a fuse?) on the mains side and I wanted to implement his temperature-controlled fan mod https://www.youtube.com/watch?v=6Z-1A6oDFXI There's also custom firmware.
Still usable. 1 euro coin for scale.
There was also this more polished supply at the time also, a bit more expensive https://www.youtube.com/watch?v=0qjLx_HsKUQ
Otherwise there's the form factor like in your picrel, but I don't remember what was the reputable/tested brand at the time. Hopefully you can find thorough tests like these on YouTube.