I got both my double strollers off of Craigslist for CHEAP (@ $40 each). They both have some cosmetic problems, but the price was right.
I have a Maclaren stroller - I think it was one of the higher end double strollers, when it was new. I manuevers GREAT - I can almost steer it with one hand, and is light enough that I can manage picking it up/putting in my car, etc. easily. It also folds up small enough to fit in my jetta. I use this for any trips that involve putting a stroller in a car (zoo, mall, etc), I highly recommend this stroller.
I also have a Baby Trend double jogger. Its heavy, not GREAT manuevor, and wont fit in my trunk, and is hard to put in my husbands Santa Fe, without removing the wheel. I use this for walks or runs around my neighborhood, but would not recommend it for a serious running jogger because it is so heavy - unless you just want the work out. Its great for going for walks, though.
With whatever stroller you get, I would recommend looking at how much it weighs and how easy it is to fold up.