Mz Catie glad to hear you've chosen the Vibe. We too have the vibe and absolutely love it. We plan on having 2 kiddies 2 yr apart what sold us was:

* easy to fold
* quite light
* I love the fact that when using the toddler seat the centre of gravity is always in the middle - soo much easier to steer than the likes of the valco with the toddler seat on the front - all the weight at the front (IMHO).
* you can adjust the height of the sun shade and angle also
* still narrow, I went through Kmart, Target and our local supermarket normal checkout isles with no problems
* The back rest wobbles (for want of a better word!) over the bumps so is a lot smoother than clucky stiff adjusting backrests (that is not a very good description but I hope YKWIM)

I've got quite a few of the accessories too and use and love them all.

Good luck and I'm sure you won't be disappointed!