Sounds like it'd be just the ticket for you. I've read quite a few journals where the riders used the BOB, and they were all quite happy with it. I'm given to understand from reading those journals that that BOB is more aerodynamic on decents, hence, a faster downhill and easier pedalling in a headwind. Conversely, (again, from what I read) they are a bit more work to get uphill and stowing and/or parking the bike and trailer can be a hassle. And, as mentioned above, extra parts (spokes, tube, tire) for repairs, should they be neccessary. If your frame won't accommodate panniers, it seems as though the BOB is the way to go.