I've had the S-A 5 speed hub (with drum brakes) on my commuter bike for a few years and like it very much. I rarely use gears 1 and 5 (and then just to see if they still work) so if I had to do it again I would opt for the 3 speed hub. The issue is that the ratios are very wide so unless you have a lot of hills the outside gears are not all that useful.