Originally Posted by Carbonfiberboy

I look at expenditures like this in terms of amortization. My first pair of Sidi Dominators went 50,000 miles and were still in good shape when I lost them. My second pair fit exactly like my first pair. In that 50,000 miles I also consumed a bottom bracket, many chains, a few cassettes and chainrings, a pair of brifters, a couple wheelsets, and many, many tires and tubes. None of those other consumables contributed a whit to my comfort on the bike or improved my performance like those shoes did.

I went to the Sidis from an $80 pair of Specialized MTB shoes. I guessed that the Sidis would be better but I really didn't know. I suppose I was lucky. But if you think your current shoes are perfect, why change unless you aren't concerned about money? But you obviously are, though perhaps not concerned in the way an investment banker would be concerned. I try not to spend money unless I'm going to get some performance improvement out of it, though I am perhaps in a minority among cyclists.