I got the Stella by Child Care from Target. It was middle of the range, about $150 but will certainly last the distance with 2-3 kids. The features that have come in handy is the locking wheels, cleanability (big factor), bar between the legs (added safety) and its just so solid and sturdy.
I agree, that it is so hard to pick. I am suprised that some of the 'fancy' ones (more expensive) aren't as practical.
DD is 3yr 8 months - DS is 6 months