dd (3 and 26 lbs) is outgrowing our Bobike Jr seat and its time to move her to the back of the bike since its getting to hard to see over her head. My bike has a quick release seat on it which will affect which models of seats I can put on for her. Price is a concern and I don't want to spend more then $100. From what I can tell from reviews those ugly grey things you see in thrift shops all the time will not work with bikes with quick release seats (I had hoped to just buy one of those). I have a Trek 7100 WSD if that matters, I know its built a little differently from most bikes.
I do not want to pull her in a trailer.
We love our Hamax Sleepy. It goes on and off easily, but not sure if it would work wirh your bike. I believe the price was around 100 dollars or so. I'm not sure where you are, we got it in Europe.http://www.hamax.no/?ItemID=1151
My husband loves the WeeRide as well, it goes up to 40 lbs. I know you said you'd like a rear seat, but this one may work.
I'm looking at how the weeride attaches and I'm not sure it would attach to my bike. My bike is different where it attaches at the head frame, there is no space for it to attach. I will call the weeride people tomorrow though and see.
We know A LOT of people who use this seat. Even one family that recently had an accident with their 11 month old in it and he was fine.
I don't have the copilot, but I have one almost exactly like it. And I hate it. It isn't a five point, which I would prefer, and it REALLY needs a chest clip (cause otherwise it just slips off the shoulders) and I'd like a bike seat that reclines, so that if my DS falls asleep, I don't have to worry about him lolling forward and crimping his airway. UGH, I wish I'd bought a better seat.
I have the topeak seat as well. when i went looking for one every bike shop i went to only sold the rear seats because of safety concerns with the child in front. i believe the explanation was that the most common accidents are ones where you are thrust forward and with LO sitting there causes double the impact and more injury.
i would look further into that before buying another seat.
Actually I was torn between that and the bobike jr and ended up going with the bobike. I'm really short so I can't see over her head anymore plus both models attach to the steering column of the handle bars making it harder to control the bike and throws off the center of gravity when they start getting heavier.