I have been leaning towards 2 by Pet Gear (the Pet Gear NV jogger and the Special Edition No Zip) but also considering these:
New Flexible Handle Large Black Beige Blue Pink Pet Dog Cat Stroller Carrier | eBay Fashion Flower 4 Wheels Pet Dog Cat Stroller w Raincover | eBay
I'm a bit hesitant to order off of ebay without seeing the stroller in person, but the prices are good.
I have 3 dogs who might be using this although I doubt my papillon would be in it bc she is GO GO GO lol