I'm pretty late to this thread. I've been eyeing a bosche mixer ever since someone posted a video on here in which it produced super elastic dough. The kind of dough I've seen come out of large batch mixes in Hobart spirals. Currently, I use a food processor. But, I have benchmarked it against my neighbor's KA Pro with dough hook. Frankly, I wasn't impressed with the quality of the dough that came off of it. I was expecting elastic dough that is better than my FP. But, it was no different. It would still tear and not have that taffy like consistency that I'm looking for. I've made several dough balls with it, and in the end, the pizzas have the same texture as the FP dough.
I would love to try a Bosche, though, before buying. Because the KA just didn't do it for me.