M-Type is actually good for tricky commutes with kerb hops, potholes and lots of maneuvering, its less efficient aerodynamically so it depends what you value. Personally, i think a lower and slightly wider M type bar would suit more people and be an effective compromise. There are a couple of riser bars that would fulfill this need but they tend to be a bit swept back
. On balance - and having tried a friends S-type - I prefer speed so I'm going to convert my M to an S. If anyone is interested in the full M -type kit (stem, bars, grips and levers) for an opposite conversion then drop me a PM!