Bobb,
My stats: 6' 200 lbs--aged athlete (i.e., lots of the former muscle has softened).
I always dive in warm salt water--but some of the stuff I have read here is making me rethink that commitment.
Dive gear:
3mm Henderson Gold full wet suit w/ add on hood,and full booties---9-10 lbs.
3mm Henderson Gold full wet suit w/ 3mm Henderson vest, add on hood and full booties---11-12lbs.
ca. 2.5mm O'Neill Fleece w/add on hood and full booties---8 lbs.
I have other exposure suits, but rarely use them any more.
I usually do the first dive of the day with the greater wt. and then drop a pound. I try to use as little wt. as possible and very rarely have any air in my bc while underwater. The only "problem" with this approach is that once I am back at around 10' with about 1000 lbs of air or less, it is hard to redescend.
Joewr