I have the Coleman white gas type one duel fuel and the propane type. It depends on just what I am doing as to which one I haul with me. The last couple I purchased, one was a double mantle which would run on unleaded gasoline and the other a single mantle one for a propane bottle. I haven't even taken the duel fuel one out of the box. they were both purchased expressly for hurricane season where I might be out of power for who knows how long.
We used the single mantle propane during Ike and I have to say it lasted what time we used it, the whole 4-5 or so days we didn't have power one only a partial bottle of fuel. It put out more than enough light to do anything we needed done in the house and didn't put off much fumes. We did have about every window in the house open after the storm so there was plenty of cross ventilation. The little thing is only about 2 1/2" across with a neat little globe. We hardly ever opened it up much more than about 1/4 turn as it was simply not needed. I got turned on to those by a fishing buddy who had them down on the beach when we would do overnight trips there. THey give out plenty of light when turned up to see all you need to see. They aren't quite as good for lighting up wide areas, but for an area of about 20 or so feet they are great. Remember when it is dark a little bit goes a long ways.
I have the other white gas type we use up in the country. These I use on my shooting range during the summer nights to illuminate the targets and the inside of my shed. We also use them if we have to look for a deer at night that ran off after being shot. For what ever reason the blood stands out a little better than when using a standard flashlight. Another thing we found was that hogs are evidently not afraid of that light either. We had a boar walk right to us out across a wide open pasture with us talking to one another one night. It was pretty weird to have this big black blob appear into the edge of the light and then proceed to walk right to us. While he didn't seem to mind the light, he did seem to mind it when we opened up with our revolvers. We lost the trail of the deer, but we ended up cleaning that hog. We have also taken them down for overnight trips on the beach where we wanted to light up a bigger area to be able to watch our rods. They are better for this use because you can use foil or similar for a reflector on one side to give your eyes a break and only light up what or where your wanting to see. These are the double mantle type and they give out plenty of light.
It really depends on how much you want ot haul with you when you go. If your running light go with the single or double propane. They last a while on one cylinder and you don't have to worry about leaking fuel in your other stuff. Even if the bottle leaks it dissipates verses the liquid fuel saturating other things around it.
When you get ready to purchase consider how much area do you ACTUALLY NEED to illuminate. If your looking at the whole area around your tent and fire, look for the doubles if your only looking for enough to cook and then possibly put enough light out to get around camp up close then the singles work great. Remember you can raise them up to get more spread as well.
If you do a search on them you might see the Texsport single, that is the ones we have, and the dual fuel which will run on either the Colman white gas or standard unleaded. There are also double mantle propanes which are probably just as good as the liquid fuel but you have to also consider how much your wanting to carry. One gallon of liquid will go a lot further than two bottles of gas depending on which one and how long your running them. The downside to the liquid ones it you have to keep pumping them up as they use fuel where the others you simply crack the valve open and let it run till you ready to shut it down for the night.
Hope this sheds some light for you,
