FYI, Heun Beta is the goat in Flux.

[pflky]

It's a traditionally avoided sampler because of it's slow speed, but it is the best combination I've found so far. It delivers results similar in composition to Euler Beta, except with better background details, micro details, and color/contrast, which also includes skin texture. I could post comparisons, but just test it out for yourself. If you find an image you would consider a keeper or almost a keeper in Euler Beta, it's likely that it will be even better in Heun Beta.