The problem is common with trucks that have a solid front axle, which in the years your looking at would be 2500/3500 Dodges and 250/350 Fords. GM's of that year have independent front suspensions, and Death Wobble is a very uncommon thing with them...not to mention they have a smoother ride. So then why do people buy a solid front axle truck?...solid front axles tend to be stronger, and they can more easily support the weight of a snow plow with less front end sag. Now that's not to say that Chevy's aren't built strong or what not, but everyone has their preference.
Anyway, what happens to cause Death Wobble is the front end components wear out, either ball joints, or tie rods, or drag links...pretty much any steering or front end suspension component can cause it. This will cause the wheels to "wobble" at certain speeds, and make the front end hop and shake to the point that you don't think your not going to make it. My 92' Dodge is doing this right now at about 40 mph if you turn the steering wheel the wrong way, but that's because it needs the king pin bushings replaced, (they were a precursor to the ball joint on the D60 front axle)...but it has 173k on the originals which I don't think is too bad.
As another poster said, bigger tires can lead to excessive problems with Death Wobble. Death has been such a complaint on 3rd Gen Dodges, (03 - 09), that Dodge actually developed a totally new steering setup starting at the box and going down to the tie rods. So far is proven pretty good. But still, most people that have stock tires and stock suspension haven't had a problem. It's people that "jack" their trucks up with bigger tires and then figure they shouldn't have a problem are the ones that are having issues.
When you look at a truck take it for a drive and take a look-see at the ball joints to see what they look like. Wiggle steering components if you want to.
On a side note, no truck, (or car), is perfect...they all have their issues. You just need to decide which issues are worse in your mind and then see which truck has the better pluses to out weigh the negatives.