I have been using Olsen blades for fifteen or so years and they have worked fine for me. Recently I have been having trouble with the smaller size blades, 0/2R and 2R.
After tightening the lower blade clamp several times the bottom of the blade would bend like a hockey stick. This would make it difficult to insert the blade into a small hole.
I decided to try some Flying Dutchman Ultra Reverse blades. I ordered some UR1, UR3, and UR5s. They arived yesterday and I tried them out this afternoon.
I tried a UR1 on project that I have been cutting. 3 layers of 1/8" oak plywood. The blade cut very cleanly without any tear out on the bottom. The blade stayed sharp, about 4 times longer than the Olsen's. But most importantly for me, the bottom of the blade did not bend after about a dozen holes cut.
The blades cost about nine dollars more a gross, but they will last a lot longer then the Olsen's so I think they will be more economical.
I just my be a convert!