I have only had these about a week, but have already logged a mile or two on the elliptical, as well as a few trips around the block.  They are a great, light shoe, the only downfall I have, is they are a bit more narrow than adidas seems to usually run.  I am a diehard fan of the brand, they always have a great fit for my wide foot.  No pain or anything, I'm thinking the tightness will resolve as I wear them a bit more.  But all in all, they're a great pair of shoes, and very bright!