zlacker

Stable Diffusion with the right fine-tunes in the hand of a competent user might be the best (if you define "realistic" as best, MidJourney might disagree with that being the only metric). It is good enough that I find it hard to get excited about somebody showing off a new model.

Still, Stable Diffusion is losing the usability, tooling and integration game. The people who care to make interfaces for it mostly treat it as an expert tool, not something for people who have never heard of image generating AI. Many competing services have better out-of-the-box results (for people who don't know what a negative prompt is), easier hosting, user friendly integrations in tools that matter, better hosted services, etc.