Depends on what you want out of your stroller. Are you a runner? I hear the BOBs are really nice. I have a single City Mini and love it but I mainly use it for casual walks (I hate running). I have run into people who have double city mini's and love them. Those are the only 2 I know anything about. Most stores will let you "test drive" a stroller so you can get a feel for it.
I asked this same question to a ton of ladies in our FB Group and everyone highly recommended the City Mini Double, that's the one I'm getting and I love it just from the test drive I had. Well worth the money but I'm getting mine off craigslist :P
Re: Double Stroller recs??