is the performance : value proportionally better than say a semi aero wheelset that cost £250?
I cannot possibly make that judgement for you. The objective performance gain over a cheap but well designed 30mm alloy wheel like a Shimano RS30 is quite small, but I have no way of knowing whether that gain is worth the price difference of typically £600 to you.
I cannot possibly make that judgement for you. The objective performance gain over a cheap but well designed 30mm alloy wheel like a Shimano RS30 is quite small, but I have no way of knowing whether that gain is worth the price difference of typically £600 to you.