I currently have a Trek 3500 Mountain bike which I use for commuting 34km total each day. I did put on thinner tires. My average speed is about 20 - 22 km/hr I'm tired of the leaning forward all the time and was considering getting a "comfort bike" where the handlebars are higher than the seat. This would provide a much more enjoyable view/ride. I'm thinking something like this: http://www.primeauvelo.com/en/cypress-dx-42604-0014040.html
IMHO I am guessing (please correct if I'm wrong) that once you go non-road bike, the differences of hybrids are marginal. I believe most (all?) hybrids have more or less the same top speed, and my question is - would a comfort bike be more or less the same as a hybrid, but a hell of a lot more comfy.