I'm a 140lbs rider (125lbs at race weight, but I've had a fat year and I'm rounding my current weight up).

I'm thinking of getting a new wheelset. I'm just wondering what people think of wheels like the Mad Fiber and Reynolds RZR's. Do they stay true and round? Are they durable enough to use semi-regularly? Are they too impractical for some reason? I'd love to hear BF's thoughts!

Also, how about wheels built around AX Lightness SRT24 (215g) rims? Are these things too fragile?

Thanks!