I have two car seats and I have found this to be not well designed considering its high original price compared to the Graco car seat I had as part of a travel system at about the same price.
Both had a clip- in system to a base. The MP was less padded and less supportive. I also found it more cumbersome since I could just click and go with the graco system but I had to fiddle about with the car seat and handle to fit the MP one.
Also the Graco one can be used without a base which is worthwhile when you are out and about and maybe using taxi's and the like.
The MP can only be used with the base which is not very well thought out at all.
Overall a very disappointing car seat.