Context: 10 kms a day, in a very dense city area (stacked with Parisian morons on scooters, big motorscooters and SUVs).
I mainly use my Soma Pescadero, old school allroad bike (randonneuse spirit). Built for fun,not commuting, but it happens to be a fine commuter too
Summer mode, without a passenger, Compass 35 mm:
With tank wheels and 32 mm Marathon Plus:
Tank mode + seat + stuff instead of kid
Kinesis Granfondo winter bike, when I can sneak out of office for a quick evening / night ride before going home (main issue is to remain composed, going from office to bike in lycra with Lake carbon shoes and a Protone helmet, through "very-formal-big-big-big-corp-headquarters"

). Rear rack for the Ortlieb yellow bag:
