Hi Pat, I have been using the ACSI card for a number of years. Next years prices will be the same as this year ie 11, 13 or 15 Euros per night depending on the site. The main benefit of the ACSI over camping cheque is that you don't have to pay the site fee until the end of your visit, also some sites have offers such as stay of 7 nights and only pay for 6 etc. I also think there are more sites in the ACSI scheme than the camping cheque scheme. Overall I don't think the is much difference in the cost, but ACSI is more convenient and the is no risk of buying cheques you do not use.