Loving Commuting :)
I'm just getting accustomed to my new commuter--making small adjustments, etc.
I got a used one and I love it!
My LBS, however, almost sold me on a Trek 7.2 FX WSD
I really fell in love with that bike and it was only $377 on sale
It was an aluminum frame, a pretty blue color and decent components. But alas, my thrify self scouted out all the used bikes on craigslist and eBay first. That's how I found my Trek 830
I put 1.5" wheels on her and she is wonderful to ride! I would have had a hard time thinking about leaving a new shiny $400 commuter outside
I'm trying to work out something so I can keep it indoors when it's icky (not happy about mounting a wet saddle....bleck) but that's still in progress because it's beautiful out!
I also looked at a few other bikes but they did not suit me as well as the Trek 830. It was sold to me for $100 with a rack, tail and front lights and two cable locks (one for tires) which was just too good of a deal to pass up. Plus it was my size and really fun to ride
I then did some self-maintenance (truing wheels, chain replacement, tire replacement, etc) to get it up and running the way I wanted it and now it's fantastic. I have to say, though, I never expected to find a bike I love riding so much 
Good luck with your search
Ana
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2009 Lynskey R230
Trek Mountain Track 850