My DD has silent reflux. As with many others My M & P Primo Viaggio car seat seems to make her much worse. I have decided to buy her a new one. The two that seem obvious are the Britax and Maxi Cosy. Does any one have any experience of either or another which has helped their child? She is 11 wks now, and weighs nearly 5kgs. My car is A 3 yr old VW Passat. Any thoughts would be very much appreciated!!!