I like having "the right tool for the right job". Doesn't mean I can't build one or use one that's close, just not the same feeling for me when the work is done. I haven't had a shop before, and haven't used my air compressor for too much more than lug nuts and inflating tires, that's changing now.
I mention snap on, and toolman is a mac guy, but im not against more economical tools to get the job done. The cheaper the air tool, the bigger the compressor.
I have replaced many of my tools at least once, or upgraded.
3 hand grinders, 3 vises,3 bench grinders,and added the 4th yesterday... when will the madness stop? Never. Thats fine. see, i have four vises now that i think about it. Jeez.