In my humble opinion the best wetsuit is the one that fits the best, regardless of cost, we are all shapesand sizes and wetsuits work by trapping a layer of water close to the skin which is then heated by your body, if the wetsuit does not fit well all that warm water will be simply flushed away.

So try on as many suits as you can, don't be swayed by the jargon, if the cheapest suit fits you best then thas the one to get, if the most expensive fits you best, well thats a shame cos thats the one to get.

In my area there are plenty of people that will make suits to measure and that would be my best reccomendation.

As for outer coatings they will make a difference but I think you are better off with a cheap oversuit as previously suggested. At least you can take it on or off.

All the best

Gareth