We have a D'Lite and if I had to do over again, I'd buy a Chariot. I don't like the fact that you have to pay extra for the stroller option and it looks awkward when it is attached. On our trailer it's also fairly easy to break the plastic on the struts by overtightening the inside strap that makes up part of the seat. This may be fixed on new models (I think mine is 2003).

I think my next child-carrier system will be an xtracycle though. I like having the kid close to me so I can keep an eye on him.