We hve purchased the Safe 'n' Sound Meridian also, the shop assistant told us the only difference was the speakers and no one really uses them. The only other thing I would suggest is perhaps to look for a manual not the retractor, there seems to be alot of ppl who have the retractor who say you end up manually fixing it anyway and that way you are making sure the baby is secure yourself, the retractor one is set..

Best Of Luck with your decision.