My 2nd single speed / fixed gear, and by far my favorite bike in a long
time. Light (18 lbs) and fast, it's also a very smooth ride. The only
changes I made were to swap out the headset from silver to black,
replace the OEM bars with something more ergonomic, and throw the Campy
brakes on there, because I had a new set lying around. Many of the
components are made by the same companies that make name-brand stuff,
just without the logos. Full sealed bearings everywhere, so my
maintenance consists of wiping the chain down once in a while, and
maintaining tire pressure.
The attached photo was taken the day I got it, right after it was assembled.