I'm looking into buying a jogging stroller. I already have a b-agile that I use for everything, shopping, walks in the park, outings and am happy with it, so I just plan to use the jogger for jogging and hikes on unpaved terrain. I have noticed both baby jogger and BOB have options with a fixed front wheel (cheaper) and a swivel/lock front wheel (more expensive). Which do you have and why? Do you think in my situation I would use the swivel function much? Bonus for those who tested the baby joggers, BOB, and joovy zoom 360.