I have the 150B. It is a great router, but its potential is limited by the 1/4" collet. I just used mine about a hour ago. Still running great after about 40 years. I would not buy it as an only router. I would favor one with 1/4 and 1/2 collets.
It is essentially the older format of the P-C 690 line of routers. Many parts from the 690 series will fit the 150B. It is a classic, and will work practically forever if well maintained. All this said, I would look at a P-C /Makita/Bosch/Dewalt if you want a new router rather than a classic.
Last edited by rick7938; 03-19-2010 at 05:41 PM.
Reason: Additional comments.