This bike (a Trek FX 7.2)

gets my son to daycare and me to work, 5 days a week. I started out with an i-Bert safety seat (which mounts on the front) and a rear rack and panniers, but my knees kept hitting the seat and it made it hard to stop at stoplights (my bike doesn't have enough room for me to hop off the saddle with that seat). So I switched to the Topeak seat with front rack. Makes the bike feel more cumbersome but feels safer. I think my son preferred the front seat- the view from this one is pretty boring.