On the subject of winter biking in Calgary, I don't commute to work because I must go to the airport every few days to start work, but as we live in Beltline a few blocks from everything interesting about Calgary, I ride almost everywhere to run errands, a little bit of grocery shopping, or just for a Sunday ride with my wife (on her awesome vintage folding bike found, where else but at the Good Life). My setup is a 1970s sturdy road bike with a steel frame, stripped down of all gears and brakes, and fitted with a single-speed coaster brake wheel (because it is illegal in Calgary to ride a brake-less bike). Easy setup to maintain (daily cleaning and weekly spray with chain lube in winter) and fix (nothing to fix actually except the occasional puncture), and that matches my riding almost anywhere in Calgary, even on steeper climbs which I enjoy as it gives me the chance to sweat a little so I can have the excuse to eat my daily dose of chocolate. However, I still have not been able to find a studded tire in s. 27 to fit on my front wheel. I rarely ride on trails which I would like to change, since due to a chronic achilles tendon injury, i can no longer run the way I'd like to. I still like the simplicity of a single-speed and the extra workout required to climb hills, so any advice on single-speed sport bikes (affordable, i.e. under $700) would be a bonus.