Ted,
I may be able to shine a little light on the matter. You need to have the base understanding that manufacturers' sizing charts are usually not accurate. This is not out of idiocy, but out of a corporate decision to label the wetsuits with sizing parameters that make them most marketable, sadly at the expense of the customer being fit properly. Omer's sizing chart IMHO is not accurate at all and will cause many divers to order a suit that is too small. I helped fondueset and many other with this.
The best thing to do before you buy is to ask other divers or the store owner about a size recommendation based on your height and weight.
..........and on a side note, there is also no true sizing standard by which all the manufacturers abide by. For instance I wear a size 4 in Beuchat, a size 3 jacket and size 2 bottom in Imersion, and a size 5 Omer Dahlak.
Thanks,
Jim
