Your Opinion Please - 1/2 ton coils with air shocks or 3/4 ton leafs?

[mdwilf]

I do some towing - not every week, but several times a year I tow things on my dual axle trailer, and occasionally I haul some weight. I'd say the most I'd ever tow would be 6,000 or 7,000 pds, not counting the truck & trailer. But most of the time I drive my truck for pleasure.

I've never been happy with the way the 1/2 ton coils handled loads, even with HD shocks. I have a frame with 3/4 ton leafs from a 68 GMC I could use, or since the truck I just got has "Heavy Duty" 1/2 ton coils (visibly much stronger looking than regular coils) I've been thinking about spending the money for air shocks so I could have the added capacity when I need it. I guess a third alternative would be to keep the coil setup & make a set of overload springs.

I would appreciate your thoughts & experience.