I used a capsule for Kimberley and loved using it. She has no problem with her spine from sleeping in it when going out to see friends and also they are also used on some prams if you buy the pram that goes with capsule so you just take them from the car to the pram without getting them out.
I wish i didn't sell mine before i had Alex as i missed not being able to get him out of the car without waking him up all the time.

I've been thinking about getting one for this bubs but DH isn't sure but it's not him having to deal with 3 small kids and a kindy run twice a week.