For best outputs: Sampler: Heun, but nearly any may work as well. Steps: 40, cfg 9, CLIP skip 1. VAE: not necessary. Pos prompt: no need of big weights. To increase quality detail, you can use the lora "SDXL Detail" with a weight of 1, the embedding "BeyondSDXLv3" and the embedding "OverallDetai" (included in my example runs). Neg prompt: from empty to what you don't want to see, or for example, "Boring, out of frame, bad render". AuroraXL Plus or + is AuroraXL dialled up to 11, more colour, more detail, more everything. It's great at doing busier and more intricate images compared to AuroraXL although it loses some of it's realism.