We've had the Zippy now since January and have used it as our one and only stroller. It does VERY VERY well inside and on good sidewalks. We love it.

However, I am now researching 3 wheelers with air tires for extended outdoor walking. The Zippy does better than it's probably meant to do on the uneven sidewlks and gravel paths we often use, but I really feel like I want something that is made specifically for that type of use. I want a smoother ride under those circumstances and I also feel like I'm punishing the Zippy a bit when things get rugged.

Ultimately the plan is to use the Zippy in and out of the car, restaurants, etc. but use the other stroller when we really go out for a walk.

I didn't want to have 2 strollers either but it seems everyone here is right - one stroller can't do everything!

Good luck.