I first commuted in March to October in 2003 and 2004 and then more seriously all year round since 2009 to date.
I’ve done about 6,000 to 9,000 London commuting km’s a year since 2009 depending on how I’m feeling/what the general weather is like.
What’s the perfect commuter? for me it’s a bike that is reliable, fast and maintenance free.
I’ve used:
Bianchi Via Nirone – nice and fast but very stiff Alu frame makes it uncomfortable on those potholes. the Campy gruppo is pretty unreliable too. I’ve broken four right-hand shifters on the commute over the years. Rim brakes make it scary in the wet. Never fitted mudguards to it so try to avoid the rain anyway
Specialized Allez Comp alu frame – just as fast as the Bianchi but much more comfortable with the zertz inserts in the forks and seatstays. I really like this bike but it’s perhaps a bit small for me. Only broken one right hand shifter on this during that time. Rim brakes again can be troublesome when it rains. Fitted Crud roadracer 2’s to it for year round commuting.
Trek 1200 converted to singlespeed – not as fast as the two above (I can’t spin my legs fast enough on a 50:18 gearing) but the frame is comfortable enough for alu and singlespeed makes it much easier to clean and maintain. you guessed it, rim brakes again. Again, fitted Crud roadracer 2’s to it for year round commuting.
dialled bikes Prince albert – steel with 700c wheels – only used this a couple of times when the other bikes were out of order. Very comfortable i.e. steel plus 140mm revelations up front plus the disc brakes offer unrivalled stopping power in the wet but the MTB gearing and upright positioning made it painfully slow.
Raleigh steel framed road bike circa mid-1980’s – this was my first commuter bike in 2003/2004 and really got me into road riding. Steel frame and forks were comfy enough although the non-indexed gears with shifters on the down tube were painful. Gears never worked well and i ended up being either in top gear or bottom gear with no in between and I blame this for developing my low cadence.
so to summarise, dropped bars, decent gearing, comfort and room for mudguards are probably my priorities
EDIT: Oh and of course puncture proof tyres. All the above is pointless if you spend all your time at the side of the road.
Conti Gatorskins all the way for me