SDXL turbo is great in my experience! Way better than any alternative at that speed (e.g. sd1.4 or sd2). For img2img it's fantastic. And since the 800m model is using new insights since then and generally a cleaner dataset from the looks of it, I could imagine it's decent for some tasks (or better than sd2 turbo at least, which is enough to be fun and useful in my eyes).