Have you read the Financial Best Buys forum for details of the best lump sum and regular saver deposit rates on offer and the many threads in this forum dealing with these accounts?
FA do not pay 5.25% CAR - they pay 5.22% gross CAR on up to €15K and, according to what they told me, if the account holds more than €15K then the rate falls to 4.07% gross CAR on the lot (not just the balance above €15K). On the other hand it is the best demand deposit rate on offer at the moment unless you consider some of the regular saver accounts offering c. 7% and allowig withdrawals (EBS for one if not the only one that allows such access).