Originally Posted by
ddeadserious
I personally would choose fixed/fixed because it gives you more options. You can run a fixed cog/lockring OR a freewheel on either(or both) sides, it offers a lot of flexibility. With a fixed/free hub, you're restricted to having a cog on only one side.
I've never understood why hub makers do this.
That said, I have put a fixed cog on the free hub side. If you really crank it down, and
use your brakes to stop, it's not a problem. Obviously, if you're on a velodrome this is not an option.