Do you hate the basket access? The basket seems almost unusable to me, but I just called BJ and the 2012 with better basket access isn't coming out until September now (they originally said February) and we need something sooner than that. Also, can you hang your diaper bag on the handle like you can in the single? If not I'm not sure how I could possibly get one, the storage is atrocious.
Re: If you have the BJ City Mini double...
As for hanging the diaper bag from the handles. I do this all the time. It has never tipped and that's even when the kids aren't in it. I stuff a lot of stuff in my diaper bag too!