I bought a new pair of Nike Structure Triax 10s at RunTex today. Hopefully it’ll help reduce the load on my knees a bit. I’m concerned that the last pair seemed to only last about 200 miles (in my humble opinion). [The last ones I bought at the beginning of September 2007] I might need to start considering inserts or heaven forbid seeing a doctor. By the way I did try some inserts in the new pair at RunTex, but instead of being softer and more cushioned they seemed stiffer and more controlling and didn’t help. Naturally I didn’t buy them.