Just curious since I've tried a variety of frame sizes now and can't really tell a difference? Seems like folks often say how a good fitting can really help or having a bike sized perfectly... my first road bike last year I bought used off craigslist knowing nothing about bikes. I don't really have a LBS (depending on your definition of 'local') although I did travel to a couple in the past but after seeing the prices decided I wouldn't be shopping for a new bike or a fitting.

And then this year I picked up 2 more bikes, each a different size frame and they all feel fine to me.

The LeTour is 23" frame
The Tempo is 22" frame
The Prologue is 21" frame

I go back and forth between the LeTour and the Prologue frequently, and have been over 50 miles on the LeTour and I think close to 40 on the Prologue and they both seem comfortable to me. Maybe still being a newbie I just can't recognize the minor differences? Or perhaps maybe on a longer trip the difference would be more? This year I really haven't had the chance for anything long but I would like to ride further some time in the future. But its a safe bet that 99% of my biking is under 50 miles for a while, at least for a few more years until my son is old enough to stay at home by himself. Though I do want to maybe try out a duathlon next year on the Prologue which I heard you typically go down a size or so on a race bike which is partly why I went as small as I did on the Prologue.