This is a genuinely useful reference, not a fluff piece. I've been running a two-truck BBQ operation for six years and I still learned a thing or two, especially about the actual motor torque ratings vs. the marketing numbers. The business chapter on private-labeling was a nice bonus. The only reason I'm not giving it five stars is that the troubleshooting chapter felt a bit generic in places, and I wish it had included specific measurements for spindle wear on common brands. Otherwise, it's a solid desk reference that's earned a permanent spot in my office.