I find that people who use BOBs tend to collect more stuff - like the 40 foot RVs that are crammed full - if you have the space, you tend to use it. The one great thing about BOBs is that you can disconnect and zoom off on your bike - even with the BOB attached, you have a freer biking feeling. But the trade-offs are significant - harder to ship plus more expensive. Harder to catch a ride in case of breakdowns. Certain places like Zion Tunnel where bikes aren't permitted - makes it even harder to get thru. There are people on both sides of this fence. People who have BOBs swear by them. I like panniers.

Jama