I used to carry 24 lbs of weight on top of my SS backplate and IQ-Pak. It was nice and comfy on the surface.
I then switched to a Halcyon SS backplate and webbing. I now carry zero extra weight when diving the same configuration (suit, tanks, etc...).
When I am forced to dive a single tank (AL80) I use a Halcyon Single Tank Adapter with 8 lbs in it and I still wear no extra weight.
While the IQ-Pak seemed to me like a good idea at the time, I far prefer the minimalist approach. Get yourself some webbing and set up your SS backplate with it. You'll find your weight requirements will change big time.
Oh yes, and one day in October I sat shaking my head as two divers with IQ-Paks suffered two different types of clip failure on their rigs. While duct tape and cave line saved the day, I'm glad it wasn't me that needed it :shocked2: