What is the difference between the Maxi-Cosi Rodi XP produced in the past and the current Rodi XP?

The ‘old’ Rodi XP (produced before 2007) has a Comfort Base that is used to adjust the seat into the reclining position. The ‘updated’ Rodi XP does not have a reclining position, but features a new and improved Side Protection System compared to the ‘old’ Rodi XP.