This thread just goes to show how personal fin choice can be. Here in the UK it's very hard to try before you buy when it comes to fins and that probably goes for the rest of the world. Both Duncan and I found the stock 32 too big. Peter and at least 3 others found it right while a couple of guys at Weymouth last week found it too small. Fin choice is a real minefield and in some cases it can be quite exensive to get wrong.
Here in the UK many of the shops only stock Select fins and often only either wave fins or freeride fins depending on the shops location. For the stockist it must be really hard to have a range without having loads unsold gathering dust.
Luckilly windsurfers are a friendly bunch on the whole and will often lend you a fin to try.