Glad we went with it
I was afraid that having the extension for our stroller will force us to have a bulky frame constantly. After assembling the new parts, which was rather fast between my husband and I, we realized the actual part where you put the second seat comes on and off extremely easily. This extra piece does not take much space in our trunk, so that's great. Love the double cup holder, stroller is easy to push and maneuver, and yes it's a bit bulky when used as a double, but which double stroller isn't? All in all we are happy we got it.