We picked up a BOB during REI's sale because it was a good time to use our dividends, and when we brought it home my husband pointed out that the manufacturing date was 5/11. I'm not sure if it's gone through any design changes since then (the most recent major update was early 2011) but it bothers me a little that it was manufactured 2 years ago. Does it matter for strollers the way it does for things like car seats?