Thought I'd add my comments :
After some advice on the forum some months ago I bought a TopSub 5mm spearo suit (
www.topsub.it).
This type is material covered on the outside for excellent durability and titanium-covered open-cell on the inside. The trouser-tops are also open-cell on the outside for a good seal. They have my measurement on file and I can call / email from anywhere in the world with the material choice and they will ship me a new suit!
It's my first non-scuba suit and so I have no real point of reference, but I'm really staggered by its performance. The neoprene is extremely soft and I feel almost naked (!) wearing it. The number of measurements taken seemed extreme, but the resulting fit is astonishing - there is no restriction of movement and no leaks. It's not too cold in the sea here (I guess about 10C) but I was HOT after 3 hours diving at the weekend.
I wore 3mm booties and gloves.
Everyone in the area has suits made there, but there are 'agents' around the world (including Australia), and I also found a couple of photos
here in the DeeperBlue archives...
I paid about 200 Euros for the custom-made suit, and I guess this goes to show that good materials, good design, and good fit needn't cost a fortune.
Ciao
Al