Sorry to ask, I know this subject has probably been done to death but I'm very confused about which new born car seat to buy...I was going to go for the Maxi Cosi Cabrio Fix with Isofix base...I was under the impression that Maxi Cosi did car seats for todlder and older children the fitted to the same base so we would only have to replace the seat itself as the child grows...but the more I read the web site the more I now believe I'm wrong...Please can someone enlighten me?