All depending on the induvidual,, I have a al 80, just like divemaiden,,, cant affort steels, but yet I weigh 170, 5’10" wearing a 7 mill full wetsuit, I need 28 lbs on my waist and 4lb on my ankles,, Yea I just love the part about exit and entrance!! and I ve tried experimenting with these numbers, less lead,, I bob just like a duck,, which on 1 dive I WAS the only 1thats butt was stickin outta the water :o). and to me all this talk about buyin this tryin this is ok,, but when you can only afford so many things, ya gotta stick with what ya got!!