I have done some flying with WAC and I can say their training is second to none
While the landing fee's seem higher than Wanaka, the advantage of WAC is you only pay from the first radio call, meaning most of your taxi time and all of your runups/pre-take off checks are not charged for, which can save you a lot of money compared to places that operate on "Hobbs" time (ie. the entire time the master switch is on). This can save you upwards of 0.2 every flight (~$60)
If you do decide to go with WAC I am sure you will have no issues at all. It is a very well run aeroclub from what I have experienced in the past