The u brake on the fuji absolute 2.3 seems an odd choice. The other fuji and the diamond back look fine. Performance will put this together for you so those are good choices. You can save money by buying from craigslist or a police auction but you need to have some basic wrenching skills (or you are willing to learn). You can buy a decent quality commuter used between $100-$200 fairly easily. If you decide to go the used route, you can link the CL ads to the C&V valuation forum to get some feedback on whether the bike is a good choice for you or not. Then you'll have to go over it to work right which will teach you some basic wrenching skills which will come in handy when commuting.