decided i want to switch my rear cog to 17t. made a few calls to LBS's and have the option of getting Surly or All City as the higher end options. can get cheaper $10 cogs but my current one is a cheap stamped cog already and it's got a loud 'ratchety' sound. it doesnt look solid... it has a chrome finish that looks ghetto
surly is $27, all city is $45. Is there a big difference between these two brands' cogs to justify $18 premium?
Also, for lock rings, couldnt find dura ace. Have the option of getting a surly for $18 or reuse a formula lock ring. some LBS's offer generic ones between $6-12. thanks in advance