With Stable Diffusion AI image generation the Dreamshaper Turbo checkpoint has been my model of choice since its release. It needs just 6 sampling steps, which makes it fast, and I prefer the images even over non Turbo checkpoints. A new trend now is 'Lightning' checkpoints, they promise nice images in just 4 steps. In this video I compare 6 checkpoints:
Dreamshaper Turbo 2.1
RealitiesEdge Turbo 7
Dreamshaper Lightning
RealitiesEdge Lightning 7
Juggernaut Lightning 9
Realvis Lightning 4