I have not worn wet suits through 40 years of diving. I stick to warm water down to 78 degrees. But thinking of going to colder water this year. Ive been researching suits but man is it confusing. I have a lavacore pull over vest and love that it is not positively buoyant and very light in my bag. Can you tell me how it compares to standard rubber type suits....... warmth, ease of donning it, life span, need for more weight etc. Thanks