Nowt wrong with the standard wheels on a Defy 0.Looking to upgrade from stock wheels on defy 0 2015 any advice be welcomed .
Doubt you would notice the difference if you swapped them for anything costing less than £600 - 700 and even then it would probably be subjective.
Mate of mine just spent a £1000 on a pair of Zipp 303s for his Scott Foil and I can still blow him away up a hill on my £200 Wilier hybrid.
Save your money and put it towards a new bike in a year or two.