There is about a 3-4 day "learning curve". Initially, it seems like you a going 100 mph and trying to spray and spread. There is a lot going on the machine. After a few days it becomes second nature. Experienced users, can fly over a lawn and do just as good a job or maybe better, with a ride-on sprayer spreader with experience.
The biggest benefit to me was that I had energy after work to do other things. Before the T3000 I was coming home and falling onto the sofa to recover. Pushing a spreader/dragging a hose all summer in the southeast simply drains you. I know that you know exactly what I mean. You have to get one!
I know exactly what you mean, if I get comfy in the recliner I'm out like a light by 8:30 it drives my wife and son crazy.