If you’re seeking a bike for your daily commute and your weekend exercise, a fitness hybrid — that is, a road bike with flat handlebars — may be the right choice.Over the past nine years, we’ve spent 60 hours sifting through nearly 75 options, test-ridden more than a dozen bikes, and concluded that the Marin Fairfax 1 is the best hybrid for most people.It provides a stable, comfortable ride on city streets, and it’s a better value now than when we first tested it.