I've used Mac and Snap-On and in my opinion, if you use them professionally they won't last long enough to pay for themselves. Also, they won't hold up to just sitting around unused either. I would say if you're able to used it a couple times a day, it should last quite a while.
Scott


Scott Ward

2 1948 1.5-ton Loadmasters
The red one and The snow pusher
1 1950 3100
1 1955.1 Chevy 6500
1 1954 Chevy 6500 2-Ton
1 1955 1st Series COE 5700
1 1963 K20 (454)
1 1964 C10 (350)
1 1951 1.5-ton Dump Truck
1953 and a 1956 Ford F800

Raising a teenager is like trying to nail Jello to a tree!