I might go with the Tuftruck HD leveling springs on mine.
Tuftruck TTC-1216 HD Coil Spring Kit 94-13 Dodge Ram 2500, 3500 4WD
I think the weight of my bumper and winch will settle them down a bit and they should put me ahead of the game for when I add on a truck camper. I'll have airbags on the rear then.
I can't find a negative review on these springs. Seems like everyone that tossed them on knew the ride would be a bit more stiff and they actually like it that way. I tend to prefer a firmer ride as well, personally.
Still haven't ordered anything, and I'm up for other suggestions but these seem to be a solid bang for the buck with no real downsides aside from a stiffer ride. My soft and plush ride now sucks when it bottoms out hard. I can deal with something slowing it down before bottoming out.
--Chris-- 2012 3500MC-DRW-4x4 - stock at the moment
SOLD* - * 07 Silver QC LB 3500 5.9 4X4 G56 w/ SBC DD, BD Ex. Brake - no longer a Full Time RV'er-