From what I heard (take it with the grain of salt) ... Fein had the patent on this tool, making it initially very expensive and besides it is also top quality. Now that the patent expired and other tool makers are out there selling the knock-offs, you can get basically the same tool from a variety of tool-makers. Of course the quality is going to vary. I've heard good things about the Rockwell, Milwaukee and Dremel. If it is going to be used often, get the best quality, probably the Fein. Otherwise ... evaluate the cost vs use ratio. I tend to over-estimate the amount of use that I will actually give the tool so I often spend too much for a tool I don't use that often. I haven't bought one of these yet so I'm liking the comments. (It seems that Fein has also come down in price due to the competition - that's a good thing, no?).