We have the bugaboo butterfly and it’s easy to fold and seems quite comfortable
I've had the joie literax since my little one was 1 year and I love it its great easy to push, sturdy and easy to put down isn't the smallest but other than going for a stroller ( we have the cygnet as a spare as we have two cars so keep one in each ) also has a good basket and lies down flat. Oh and the two cup holders and the pouch at the top is so handy
We have Babyzen and icandy ( I love the latter more though he is growing out of it )
We have just bought a joie literax pro after our friend recommended it. It sits really upright, is super light and can fold down easily