Hi. I am looking at buying either the Minikid or move but unsure which one to get. The seat won’t need to be moved out of my car once installed, so the self adjusting tethers on the Minikid won’t really come in useful as it won’t ever be removed. The seat is for my son (10 months old, 50th centile for weight, 75th for height), once he outgrows his infant carrier. Am I right in thinking the highest head rest setting is the same height for both? Is the Minikid worth the extra money? Any advice would be a big help. Thank you.