Please don't laugh at my bikes....I am budget restricted I plan to upgrade when I can afford it.
Anyway, I've been making my 6 mile round trip commute for the past month on a Huffy Tempas that has sat in a closet for 2 years. When I dragged it out I had to adjust the brakes and lubricate, but it is functioning reasonably well. It's a small bike so I had to hike up the post quite a bit, and I am bent over most of the time. I went ahead and bought a Mongoose Paver to replace it since that's the best bike I could afford (including used, at least around here). I assembled it myself and the only problems I encountered were the V-brakes needed major adjusting and the front wheel needs to be trued. The gears shift fine, but I may need to adjust that in the future I think.
Other than that, the Paver seems way lighter than the Tempas, and a way better fit. I also ordered some steel and alloy pedals, the reelights led flashers, and a pump with a bracket. My commute will change next month to 12 miles round trip, so wish me luck! I love this site!