I had a Trek 7.3 fx. It was my Chicago city bomber and held up very nicely to the rough city streets. Mine just got stolen and I'm graduating from a hybrid to a road bike (actually 2 road bikes - one for long rides and one for the city). I thought my Trek hybrid was good for getting into riding but I could see if the bike gets a little 'old' and you want to get a road bike.

My suggestion is you can probably find a used one on Craigslist for a few hundred cheaper than brand new. You will be saving on the depreciation that would cost you if you went and bought brand new and then decided you wanted a road bike instead.