I don't but I do have the citi mini and I love it! I have had 6 pushchair/prams before I settled on this one! It's fabulous!!! I'm not changing it for when I have my new baby either!
I also have the single city mini GT and love it!!!! Total babyjogger convert now, won't use anything else. Hopefully getting a Versa GT if we ever get pregnant again.
We've got the city mini and are going to try it out for the first time today