Originally Posted by
bikeymama
At 14 mos I would get either a bicycle seat (rear or front, whichever you feel safer with) or a trailer. The trailer will last longer, although I've just moved from using a trailer to an Xtracycle and the weight of my kids feels much lighter when it's actually on the bike. Although I have 2 kids weighing 80 lbs total. The weight of your one young toddler might not feel much at all in a trailer.
Speaking of age, another thing to consider is jolting of the young child.
Hard-mounted seating, like the front/rear seats, probably subjects the child to harsher impacts from bad road surfaces than does the slung seating of trailers (or the Chariot Sidecarrier), which provide a type of passive suspension.
Thinking of delicate young children, this is probably something to consider.