I have a set of Mavic Ksyrium Sl wheels and the rear has a crack on it. I was talking to one of the mechanics at the LBS and he stated that Mavic may not cover this under warranty since I am not the original owner. He also stated that it would probably run me around $300 to have it repaired by Mavic. The owner let me use some FLO60 wheels that he is selling. They put them on the bike and I left. When I got home I decided to take them off and put the stock wheels back on. I rode this morning and immediately felt the difference between my Mavic's and the factory wheels. I am looking online and found a set of Shimano Ultegra WH-6800 for $319 at Nashbar. I like the wheels and based on the reviews they seem to be a good all around wheel. Still looking around and would like to hear some recommendations on wheels. Trying to stay at $500 or below. Below are some pictures of my bike with the FLO60 wheels on it.