I love my baby jogger city select with the doubles kit. It's more than $200, but worth every penny. You might find one on CL? I can use it as a single or double and it has run flats and shocks. Turns on a dime and never gets stuck. It's so easy to fold and reconfigure and has awesome canopies. And the handbrake is great!
Sorry if I haven't gotten back with anyone via PM. Still learning the iPhone app and not very "techy".