Yet another crack has appeared in my Planet-x carbon wheels. so i've decided to retire them. I'm now after a replacement set. A deep sectioned clincher wheel suitable for using on HILLY sportives and time trials. The planet-x's were almost ideal, I just wasn't keen on the fact they were tubular. I know planet-x do a clincher version of their wheels but they're too much money. Is there anything on the market for under £500?