Con: No current source, Pros: More precise, (inhouse-) calibrated on a 8.5 digit meter...
And it´s complete assembled, tested, for 325 pounds.
Knowing you, it's going out for calibration either way. 😉
The DIY version looks like a fun project.
If I make it, I'll use my laser to cut a clear panel for it. I can also mark the outside of the enclosure for the cuts. I eventually want a fiber laser, so if I get that first, that can make the enclosure cuts too.
Edit: It's a touch screen. I'll probably just put a screen protector on it.
I wouldn't be surprised if you went for both projects anyway. Look at it this way, you can get the PDVS2mini now, and then wait until next year when the parts are cheaper to build the project reference. That practically pays for the PDVS2.
...and then buy another reference you find somewhere else. 🤣