I received the Doc 2 years ago for Christmas. It puts a great edge on the bits. The problem I have is getting the proper shape. Kind of hit or miss. Depending on the bit size it doesn't seem to put a decent point on the bit. The bit tends to skate around a lot on steel. Using the split point setting helps some, but thats rather touchy to get just right also. The unit I have does have the angle adjustment. On the plus side it does a great job on carbide masonry bits.
John
John