The hardware looks the same, xrite meter and there are different versions.
The stock version that is similar to the above, is different in the sense that the version from Amazon , is straight out from factory.
The guys from curtpalme though, recalibrates the stock meter because when they reference it against a reference spectroradiometer, the numbers and readings deviate greatly. They seem to think that, each unit produced by factory deviates in the sense they use a generic factory calibration and there is unit to unit variation. Just like the tv out from factory, some has more blue, some more green…
So they recalibrate the meter to narrow down the errors on the meter itself against a reference meter and have claimed that it narrows the errors to half of what the stock stock OEM version does
Now how true? We don’t know. Because we don’t have a reference spectroradiometer to verify. We can only assume what they claim to be true. They do provide a calibration report though. And a service to recalibrate the meter due to aging issues.
But so far, it does look accurate and nice though. Also I’m not sure how much it deviates from the stock oem factory version from amazon unit by unit. Gotta take a leap of faith there if going with the factory cheaper version . But I think If it’s for use calibrating pc monitors etc, the amazon version will be more than adequate.
Spectracal c6 does the same thing. They are the exact same meter, but referenced against their own high end meter. But that version can only be used with calman and no other software
Speaking of c6, u might want to check with winwin if he is ok to share. He has got the c6 version from spectracal. Then u guys can split the cost . A lot more beneficial because the meter is used probably once or twice to calibrate and stashed away in the store room after that