Anyone have either of these strollers? They look almost identical but the Swift is about $70 less. I don't have a problem paying for the Quest but I am worried about the tipping aspect. I want to purchase a new lightweight stroller for our upcoming trip for our 2 1/2 year old and have looked at everything and these are the two I keep coming back to. We also have an 8 and 9 year old so I would want to hang some type of bag on the back, really like to Skip Hop ones. Any suggestions would be great.