Tauranga, New Zealand. Cheap cheap planes, AWESOME town with world class beach, surfing, sunshine, beautiful women everywhere, quality nightlife.
I used to work at Bay Flight there and can highly recommend it, the guy who owns it is an ex Air New Zealand pilot who's about the most laid back human being on the planet. The tauranga aero club and a couple of other small operators on the field there can probably also sort you out with a plane to hour build with.