I have two fixed gear bikes one for winter one for summer...I am more of a spinner than a masher and I prefer lower gear ratios...I ride 46/18 fixed gear which is about 68 gear inches, it's a perfect gear ratio for my needs, it gives me quick acceleration, reasonable speed and allows me to climb hills with ease. I have a lot of traffic lights and intersections to contend with so a lower gear ratio makes it easier to control the bike and easier to accelerate or slowdown...My other fixie which I use for riding in extreme winter conditions is set up with a very low gear ratio of 36/17,