So..when I was pregnant we got a Chicco travel system. I am a runner, and knew that I wanted a BOB. Well, we ended up buying one when DS was 3 months, and our travel system Chicco stroller is sitting in the garage and has never been used again. When DS was little we used the infant seat adaptor for the BOB and used that at the mall, etc... Around 5 months or so I think he had good neck control and we started just putting him in the BOB. We take it everywhere.
But, as you noted above, of course it doesn't recline, so if you want that and don't want to have the infant carrier in it - then the BOB is a no-go. I would just say that we hated our travel system stroller - once you "drive" a BOB, I just don't know why you'd go back! I wish we had just gotten the BOB to begin with - it is spendy, but worth it if you will use it for running anyway.