Stiff 3" leaf pack

Greetings.
Would like to gather a few opinions about 3" leaf packs.
I've done a '14 regular cab with the All-Pro leafs, they held up solid thru a number of years getting firewood and some small trailering. This '14 got the toytec leafs (Dewey?), they went reverse arc/flat/mustache in less than 5K miles with only a couple 800-1000# loads and a couple of heavier trailer pulls. The truck's stance is sagging pretty bad, guys at toytec don't seem to be interested in helping offering a stiffer option...
Have heard the Emus are squeaky, as were the all-pros, one mechanic suggested dobbinson(?) I did a short stint with ICONS on a full size truck, didn't keep it long enough to know what I thought about them...looking for stiff, any backcountry I do is low speed with a load. Any ideas? Thanks

 

airbags....if youre hauling wood, thats what I would do. ANY spring, under that much load will sag eventually...

 

I'll second airbags (with daystar cradles). I bought HD OME leafs and they were sagging less than a year later with less weight on the truck than they are rated for. Added airbags and the ride and load capability instantly improved. I can adjust for towing and load weights easily and the truck rides so much better.

I went with the Riderite kit from Firestone, but should have just ordered the bags by themselves as I ended up not using any of their brackets. I mounted them to the stock bump stock landing on the frame and made a bracket to mount on top of my ubolt flip kit to hold the Daystar cradle:

 

General Springs KC
Heavy duty Leaf springs

 

Deaver Expedition U402 Stage 3. These things are beasts. Been running them about 5 years. I run HEAVY.

 

This.

I have about 650lbs of daily weight and I actually have rake. I need more weight..

 

Nice bumper choice I miss my swingout.

 

Deavers are good.

 

Thanks a million to all responders. I should clarify, toytec did suggest airbags as well. Though I was thinking my order may not have been filled as 'expedition' caliber springs. I guess the topper and 800# loads were asking a bit too much of their Deavers. Really appreciate everybody's time in helping out a digital derelict gen X'r kid like me.

 

Toytec said they used Deavers? How many leaves in your leaf pack? I'm betting they aren't the Deaver Expedition springs. And honestly, I can't see Toytec using Deavers at all. Deavers are pretty damn expensive. I literally run my truck 1 ton over max payload and my leaf springs are fine, lol.

 

Deavers U402 stage III "expedition", rated at 700-1000 lb load capacity, are the way to go. Here's my anecdote about them.