A couple of brands not mentioned enough on Seabreeze are DC & Lahui Kai.
These are quality Australian made boards & can be custom built. You'll get great advice from Dale Chapman or Mick Di Betta on the best option to suit your needs. The results are also there to prove the design effectivness.
The other obvious one is keep testing where there's the oppotunity. Most stores let you try their second hand stuff.
Just be wary of the sponsored rider, generally only knows one brand (ha ha).
There's also plenty of reviews in these forums - for me it's try before you by.
