Personally, I don't like large front bags. They block my view of the front wheel, making it hard to avoid potholes, sticks and other obstacles. They also seem to affect handling. One of my bikes has a Nitto front rack, but I rarely ever use it, for the reasons listed above. It is a convenient place to mount a headlight, however, and the rack is useful in special situations when you need to carry more gear -- such as taking a box to the post office. Have you considered a large seat bag such as the Carradice models? That is what I use 99% of the time for commuting. They carry a lot of gear and have no discernible affect on handling.