Opinion on target curves for Dirac?

Thanks for this.  I am nowhere near this level of expertise.  It’s all fascinating.   For the Harmon 8dB curve is working best for overall action and that there is a good rumble was still plenty of clarity.  Perhaps for raw dialogue the audio advice curve would be next.   I see there’s also an NAD curve available on the website more towards two channel.  
the whole matter of measurements as in the number of measurements and the distance between themI find quite something.   interesting that dirac is not more prescriptive.   For example, one we think in a larger room more measurements would be better yet audio advice suggest a few measurements if the number listeners is fewer     Meanwhile Dirac Offers the option of adding even more measurements.   Never-ending experimentation perhaps?

I settled on Harman +4 with no treble roll off, just flat all the way out.

Wow

I was using Dirac in a 2 channel stereo system and had settled on the NAD target curve before pulling the trigger on Magic Beans True Target. At $249 it was a splurge purchase but I did find in my system it resulted in a much more neutral response, with a slightly meatier mid range and better soundstage, albeit at the cost of some of the lower frequencies. Switching between True Target and the NAD curve, the later produced a boomier, slightly more dynamic response but I definitely prefer the True Target sound. I've subsequently added a SVS SB-1000 to the system to fill out bottom end I felt I lost with True Target and I feel I've finally reached the musical plateau that I've been chasing for 40 years. Is the difference worth $249? For me, yes, but your mileage might vary and if you are happy with your current curve you might find the cash better applied elsewhere.