I've been hunting around for a good savings account and this seems to be the best I've found. Pays the highest interest for on call money, way higher even that Sharesies new savings account. Looks like it is accessible 7days a week too. I've used Squirrel on the mortgage broker side, and they were really good to deal with. I've signed up to use their savings account now, and the registration process was easy. There doesn't appear to be any fees either. This looks to be way better than what I've been getting at my bank.
On-Call Savings Account, 5.25% P.A Interest Rate @ Squirrel