WeeRide?

We have one and we love it. Both my husband and I have mounting bars on our bikes so we can take our son out. Once baby #2 gets big enough (next summer) we'll get a second one.

Balance on the bike is great - much better than a rear-mounted seat. It's cheap - much much much cheaper than a $400 trailer. Plus, our son can see everything. He likes to "steer" the bike.

If you're very short you may have trouble getting on/off your bike because there isn't that much space between the seat and the handlebars once you put the WeeRide in the middle. If this is the case you might want to look at the iBert seat too. It's similar (front-mounted) but goes on your handlebar stem instead of between the seat and the handlebars. We opted against the iBert because the weight limit was less and it just didn't seem as sturdy, but I think they're probably both good seats.

www.burley.com

Check out the burley d'lite. It's a trailer. I, too was an avid biker before kids. I never wanted the bike seat, because they're unsafe, they make the bike unsteady, and if you need to get off you have to unstrap the child first and get them off while still holding up the bike -- you almost need two adults. We had a burley trailer and our daughter loved to bring some snacks and books with her. It was the greatest thing and we're still passing it around the family as new kids pop up.

I actually just bought one from Toys R Us and have been riding with my 1 yr old daughter all week. She LOVES it! I will say though, this is not made for plus size riders. It fits right in front of your tummy. Had I known I was pregnant I wouldn't have bought it but we can move it to my husband's bike when the time comes. Don't forget a helmet :-)

Editted to add: Unless your biking 20mph down the road with traffic there's nothing unsafe about the seat and I haven't noticed it making the bike unsteady at all. I don't know what the heck that claim is about. We looked into the trailers as well and the bike technician at BikeTech advised against them for children under 3.

why don't you get one of the bike trailer things. It has a harness for the bb and is a little safer I believe. If perhaps you fall, the mechanism that attaches the bike to the trailer is better cause the bb wont be tossed. It should stay upright. Just a thought.