I, too, started out with the BOB revolution and to this day, it's still my favorite stroller. It's too bad my oldest didn't get as much use out of it because once he learned to walk, he didn't like being strapped in. That's why I got the Joovy Caboose Ultralight when I was pregnant again (gifted by in-laws, otherwise I would've searched on craigslist myself). We test-tried it before #2 came, and my then 2.5-yr-old son didn't seem to mind standing in it - to this day, he only stands on it because he doesn't like to sit. My kids are 2 yrs and 2 months apart. With the baby in her car seat carrier, my older one loved being able to face the baby and coo at her while I strolled around the park.
Some things about the Joovy: I like that it has 3 recline positions and allows the child to sit upright, since the BOB seat tends to lean back. My #2 fits better in the Joovy than she does in the BOB because she can look out and see the world better. The Joovy basket is nice and deep, but you have to move the toddler seat in order to access it so it's not readily accessible. Another thing I don't like about the Joovy is that I can't wrap my diaper bag around the handle bars, but I'm sure that's not a great habit since you can tip over the stroller if the weight's not evenly distributed. Still, I like having my diaper bag readily accessible and wish I didn't have to have it on my shoulders while strolling about. For this reason, I still use the BOB from time to time, and my older one likes to strap his legs around the front axel when he gets tired, knowing full well to keep his legs away from the tire.
I like the Joovy for everything else, and use it for amusement park days, but I don't think it's necessary since I love my BOB and my son doesn't *need* to be strapped in. I don't really use the Joovy all that much because my #2 hasn't yet learned to walk and I ergo her everywhere, plus my older one knows when to stay close to me. But all this may change after my daughter starts walking. If I have a choice to pick out a double stroller for my kids, I still consider the Joovy Caboose Ultralight the best fit for me. Lightweight and easy maneuverability are my main criteria.
Hope this helps, and good luck with your search!