We've long been fans of the Trek 7.2 FX. This bike has been a top seller in our shop for years, and has pretty much dominated our fitness bike category. It's just a great all around bike, at a really accessible price point.
With new 2015 models now on the floor, it's good to see that Trek is continuing the FX tradition of value. They've added a disc brake option to the line up to ensure stopping power under any condition, but even with this upgrade the bike comes in below $600.00, and the non-disc versions are below $500.