I have the Uppa Vista. Got it used for $300 off craigslist. I love it. It has a bassinet as well as a regular stroller seat so I saved money by not buying an additional bassinet, just use the stroller and I can roll it around wherever in the house. Also has car seat adapters for common brands, so if I wanted to just use the car seat I can. It is a bit bulky, but manageable. Its light so I can move it around myself.
I got a Graco stroller/carseat set and I love it! They have so many different, cute options and their carseats are top rated for safety. I payed like $180 for mine but I saw some for as low $130-150...I just wanted this specific design so I splurged.
We just bought the Chicco Cortina KeyFit 22 Travel System from DH's friends for $75 (STEAL!!). They were done having kids and it doesn't expire til May 2014. By then Bean will be in a RF convertible carseat. Haven't got to use it yet... but I just LOVE how it looks and how sturdy it seems to be.
I have a Graco Deluxe Travel System (click "Graco" and it'll take you to it). I love it. We bought an extra base so we only have the one carseat and my DD loves it, too. The stroller isn't too big, but it's solid and there's room for all of our stuff. I'm very satisfied with our stroller.