Upgrading pedals - worth it?
I've just bought a cheap second road bike to use as a dedicated commuter, and I'll be wanting to fit SPD-SL pedals to it. Currently I use R540's on my 'good' bike, is it worth putting the R540's on my commuter bike and upgrading to 105/Ultegra's on my 'good' bike? Do the higher models actually feel or ride any different/better? Or am I just shelling out more money for the sake of saving a few grams?