Originally Posted by davei1980

That's a matter of deep controversy and personal opinion.

I have commuted for some time on both.

I prefer flat bars but drop bars have their advantages.

The main drawback to flatbars is the limited number of hand positions. This is a bigger problem the longer your commute is, if it's short, then maybe not a problem at all. I overcame this problem by mounting MTB bar ends on the inside of the grips to give me a secondary semi-aero position for headwinds or just a change of pace.

My current bike has the Jones H Loop Bar - it's a flat bar by nature but has more hand positions than drops. It's very unorthodox but I highly recommend.