VM100 vs VM120.
The Jaw sets on the VM100 are less expensive. However, the number of jaws available for the vm100 is much less. When you buy the VM120/150, you're buying one of the most extensive jaw lines of any woodturning chuck manufacturer, covering most chucking situations. Youll never know what you may be turning in the future. The VM120 line is a good solid investment. If I were to own only one chuck, it would be the VM120. I own both the 150 and the 120 and of course, many more manufacturers. I've never had a Vicmarc handle break, but if it did, it can be inexpensively replaced by a hex key from your local hardware store.