Nice stack of SMUs you have there
I wanted to get one of those, but they go pretty high on prices.
Also would be interesting to compare ohms function, as that's one big difference between 2001/2 and 2000 series.
As a side note, you have meters warming up each other, that could affect your results a little.
P.S. any chance to crack the hood open on 2750 and for few photos? I never saw what's inside of those. Perhaps in another thread?