What's your favourite gear ratio?

I'm riding 48/15.

I think it works great for me but I don't like the idea of the lack of skid patches so am looking for something new. I don't know whether to go up or down though. Hmm...

Down. I used to run less than 48/15 on the track.

48/17 or 48/19 if you want skid patches. Watch out thought, as 48/16 will give you one skid patch.