Bought calman home. It's ease of use was appealing (click a few buttons in a hand held order, get a calibration), and the charts it showed at the end felt good. But the picture never looked quite right. It was also extremely frustrating that the work flow required you to profile the screen any time you wanted to make a change (try a different edr, try a different black level compensation setting, try a different Gamma curve, calibrate a different input, etc).
Gave up on it after the reality of the viewing experience didn't line up with what the calman charts were showing.
Found out about ColourSpace through random chance. It looked complicated. But the online manuals and extensive video guides made it possible to understand a little bit at a time, each new thing I learned gave me a point of reference to make it easier to keep learning. I decided to give it a chance and bought an HTL level license. After a good chunk of experimentation, learning the limitations of a colorimeter-only calibration, limitations of the LG oled panel, and general unavailability of EDR or equivalent profiles for the new WBE panels, I decided to order an i1 pro 3 to compliment my i1d3.
My TV doesn't have a lot of hours on it (only 150 so far), so it hasn't felt worth it to follow the guide and do a proper full patch set for it (the number of patches and recommended settings place it in the 2-4 hour ballpark to profile the display). But I did feel it was worth taking 30~ minutes to pre-calibrate my white point and do a (relatively) fast 11^3 profile. The results were immediately noticeable, far better than the out of the box performance of the panel. The i1 pro 3 is not going to serve as a reference quality meter, but to my amateur eye, the white point looks good, reds aren't oversaturated anymore, and there's much cleaner separation between red, orange, yellow, and green than I had out of the box or with an i1d3 only profile of the TV. The quality of the color looks much closer to some RGB oleds I have access to (my smartphone, an OLED edition of the Nintendo switch), as well as a quantum dot LCD panel from Samsung, and other panel types that have a spectral power distribution with very distinct/separate red, green, and blue output.
I look forward to following the guide and doing a more comprehensive profile of the screen once I have closer to 250~ hours. Very happy with the results. Can't see myself ever using calman software again, not when ColourSpace is so powerful.