Best double stroller?

Jen • Pregnant with my second baby due in October. Have a little girl who is almost 10 months.

So my daughter will be 1 next week and I am due with my son in October. I'm thinking about the jogger city select double which seems to be the best option. However I want to make sure my graco click connect car seat will snap in. Also what's the difference between the jogger city select single stroller with the double option versus just getting the jogger city select double? Any advice will help.