Just another thought. I have three bikes to choose from. I can only take one.
1. Road bike 700x25
2. Commuter bike with Shamano 8 internal hub on rear and 700x40
c. A track bike fixed gear very light and fast with 700x23
My commute is flat and I mean flat. Sometimes I wonder if a fixed gear is easier since the thing is so light. Sure I top out at 18mph, but probably would cruise on either the road bike or the fixed at around 15mph or a little less depending how in shape I will be in. Could a fixed be a better choice? Probably not, but we are talking dead flat riding and sometimes I wonder if a fixed is the easiest bike since it is amazingly light and simple.