I have not logged in in a while but I wanted to clear a few things up. Coleman stoves are hugely under-rated and by far the most cost effective method of cooking while camping/travelling/off-roading. Every Craigslist in the country has Coleman stoves listed often for $20 or less, which if you think about it, won't get you a set of Snow Peak Chopsticks. Coleman stoves from the 50s and 60s can be made to run again like new, and when you consider the fuel is part of the stove, they don't take up a huge amount of room. Coleman stoves are built like old school plumbing. There are not any O-rings. There is a gasket under the filler cap, so get a new cap with an old stove.
Regarding dual fuel vs white gas, here is the deal....it isn't marketing. The dual fuel models have a bigger more clog resistant generator, because regular unleaded gas produces more carbon inside the generator of the stove. White gas or Naptha burns cleaner and is recommended even for routine use in a Dual Fuel. A white gas stove (red tank usually) should mostly be run on it's intended fuel, but even those can run on regular unleaded in a pinch. The dual fuels are ideal for vehicle based camping since if you run out of Coleman Fuel, you can burn unleaded with no problems.
In general, the older stoves are built better than the newer stoves. The best are 60s-70s, but the dual fuels from the 90s were still pretty good. THe last few years the metal in new stoves seems disappointingly thin. Look for build dates on the bottom of the case or underneath the fuel tank tabs. In general, the white gas stoves will have red tanks and the duel fuels will have gray tanks. Some very old white gas models will have copper/gold tanks. Recommendations:
For a small 2 burner the 425 White Gas or 424 Dual Fuels are excellent. Nice small package and fuel efficient.
For a large 2 burner the 413 White Gas or 414 Dual Fuel "Powerhouse" are what you want. Big hot main burner fr real cooking.
For a massive crowd cooking stove, the 426 is an awesome machine.
Seriously, this will be the best $20 you will spend on kit ever, and produce way more heat for less money than any propane source. I spent 10 years with propane stoves and went back to Coleman stoves because of better performance. They aren't sexy, they just work.
I know it's hard to cook on a Coleman stove when you're sitting in a $400 camp chair, but trust me, a step back is a step up.