Do you already have an infant carseat? Graco Mosaic umbrella stroller holds the graco snugride (I believe any of them). We bought this go go with our snugride ($119 at BRU) and will be splurging on a BOB in the weeks to come.
I also remember seeing a chicco umbrella stroller that holds the keyfit but I can't remembers he name of it off the top of my head.
Im sure there are others out there, these are just the 2 we were considering.
Good luck in your search :)