It was about time I gave my precious fixie an upgrade. I had donated my old crankset to a friends build and decided that was good enough reason to upgrade. I didn't realize how heavy my stock OEM crankset was until I removed it. Ridiculously heavy given that the Flite 100 frame set is a great base that deserves better.
I did my research and found that the best bang for my dollar without having to lose an arm and leg but still walk away with a high quality, strong, and light weight component would be the All City 612 (pronounced six-one-two, for Minneapolis area code) Track Crank. This crankset retails for $140 with out the bottom bracket. Comes standard with a 46T 1/8 chainring.
I've only ridden on it a couple minutes but I can certainly tell a world of difference in its response!