TheSailingMoose said..
Thanks for all the info guys!
SHQ Boardsports was/is having a sale at the moment on the gt-31 so i ordered one earlier this morning.
Now to find a waterproof case....what brands are best? (ie. good and cheap)
the paqua midi is my favourite, made in Aus, close to ideal size, and providing you fold it as recommended doesn't leak and lasts better than others I have tried.
Although somebody on this forum complained of a leak, I've only had a bit of dampness get in to an old worn out one. After quite a while the sealing arrangement does wear out, but it's not a catastrophic failure like some other brands.
Getting something cheap may cost you more money if you drown the GPS!