So my bike was just stolen, and I am looking for a new one.

The bike is 95% for 2-3 mile rides to class, 5% for 5-10 mile rides, all on paved streets.

I narrowed it down to:
Trek 7200 $389.99
http://www.trekbikes.com/bikes/2004/citybike/7200.jsp

Trek 7200FX $359.99
http://www.trekbikes.com/bikes/2005/citybike/7200fx.jsp

Trek 7300 $439.99
http://www.trekbikes.com/bikes/2005/citybike/7300.jsp

Trek 7300FX $419.99
http://www.trekbikes.com/bikes/2005/citybike/7300fx.jsp

Motobecane Jubilee Deluxe $295.00
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=98083&item=7138314173&rd=1&ssPageName=WDVW
http://www.motobecane.com/MBUSAdlx.html

My main question is, what is the difference between the FX and the non-FX Treks?

I am used to Mountain bikes and dont' want a bike where I will be sitting very upright. Can someone recommend a bike based on components (I don't know much about them) as well as sitting position? I Don't want to sit too upright.

How does the Jubilee compare to the Trek bikes, any advice?

The Trek I would buy at the local bike shop, but the Jubilee has to be purchased online, I am not sure if I want to end up buying a bike online, my local shop offers free adjustments for a year.