Ok I got a question. I was looking at 48 or 49/18 gearing. I was told "A 42/16 or 39/15 combo would give
you essentially the same gear" What is going to be the difference to me if I go with the 42/16? I'm used to pushing the bigger(52/20) on my road bike. Is my cadence going to be higher on the 42/16 much?