I'm looking at booster seats at the moment, and I'm completely overwhelmed by the range on the Cybex website. Just looking at the Isofix compatible seats there is the Z I-fix, S I-fix, M-fix, M-fix SL, X2-fix, X-fix, B-fix, B2-fix, B2-fix+ and B2-fix+Lux.
I can't find anywhere that simply explains what the differences are between all of these seats, and a recommendation for which is the best one to buy. Does anyone have any experience with these seats?