Thank you for that detailed explanation. I can't now recall whether I was able to run a full evaluation of Lumariver at the time and they changed their trial version subsequently, or if I had already purchased the full version at the promotional release price prior to evaluating Basiccolor 5. I do get excellent results from the Lumariver profiles, with most images only needing very minor adjustments to the black and white points and the saturation (the profiles are built on a linear curve).
I agree about the settings in Lumariver, which are perhaps both a strength and a weakness; Basiccolor is certainly simpler to use out of the box, and will also batch process profiles IIRC, vs. singly in Lumariver, though I didn't find the latter a major disadvantage. It might be interesting to run a further comparison at some point, if Basiccolor will permit a further trial of v6 after already having trialled v5.
FWIW, I have already trialled Display 6 to see if it was an improvement over SpectraView Profiler View 5 on my NEC SpectraView Reference 271 monitor, since that version of SV Profiler reached end of life several years ago and additionally appears to have problems driving an i1 Display Pro, though it is listed as supported (it works fine with my i1Pro spectro). I also have an Eizo CS2731 and it seemed to make sense to have a single profiler driving both monitors if possible.
Unfortunately Display 6 also appears to have problems with the i1 Display Pro and SV271 combination and on several occasions drove the monitor to maximum brightness and stalled at that point, requiring a full factory reset of the monitor to resolve the situation. It also has similar licensing issues to Input 6. In the end I reverted to SV Profiler 5 and the i1Pro Spectro, which at least works without hassle on the NEC. The i1 Display Pro works perfectly with Eizo's Color Navigator on the CS2731 but I seem to recall it also having a few issues with Display 6 on that monitor, so at that point I lost interest in Display 6 completely. Which was something of a disappointment after the rave reviews I had read about the product. But I'm not prepared to waste hours trying to coax it into working properly, especially on a production machine. I don't doubt that Basiccolor's underlying colour engineering is one of the best, but their software packages do seem to have some usability issues overall.