I have been looking at one of these to carry in my BOB. Pocket chainsaws run about $20 with shipping. Today I found military style wire saws for $10. Says can withstand up to 100lbs pressure. I am not an expert with either, but I figured someone would be able to steer me in a good direction.
I've used the Military version a few times. Not great at all. Better off with a knife really. Stupid thing is akward to use and doesn't do a very good job.
If you are actually planning on cutting a lot of wood I would suggest using a 24" bow saw, the hollow aluminum tubed ones are lightweight but they are sort of bulky so they are best carried strapped to the outside of a pack.
But I've found that they are well worth the bit of hassle to carry around as they can cut more wood with less effort much faster than pocket/wire saws or machetes or even camp hatchets.
You can get a great pocket Chain saw at Countycomm.com right now for less than $20.00. I personally would opt for a Silky Saw, either the folder or the fixed, in the coarse teeth model.
I cover this in my wilderness survival class at length. There are really good saws and terrible ones. We are talking about a couple different things here.
The OP asked about pocket chainsaws vs wire saws. Not hatchets or bow saws. A wire saw or pocket chainsaw has advantages over hawks, hatchets, folding saws or bow saws. Each has it's use.
I will say this. Wire saws break. They just do. Even the good ones. "Good" is a function of how well they cut. The good ones have a very aggressive cutting wire, one that feels uncomfortable to run through your fist.They run $10 or so. The crappy ones simply do not cut worth a damn, oh and then they break.
Now, the pocket chainsaw or chainsaw in a can is a totally different animal. I am a HUGE fan of this saw. It fits into a can the size of a Skoal can. It can cut seasoned hardwood the size of my thigh into whatever length I need. It is built like a two way chainsaw chain, linked and pinned, and comes with two wire loops to connect to the end. Fashion a couple wooden handles and run them through the loops and you are a freakin survival lumberjack.
I heartily recommend the chainsaw in a can. The $20 is well spent.
I guess I'm just way ahead in terms of suggesting things, first the sharpmaker now this. I have preached of the advantages of these for the last couple years, even when everyone was on their folding saw kick. but I suggest only buying the ones that use actual chainsaw chain and teeth, they are better in most aspects.
It's the best wire saw I've found. The key to using a wire saw is to make them into a bow saw. This is done by using a green limb and notching the ends to hold the blade. I like the Commando saw becasue it serves double duty as a saw and as a snare if need be. It has two sizes of rings that allow one end to pass through the other making the snare.
Foldable pruning saws are cheap and cuts trees pretty well (it's what they're made to do, after all). I do like the pocket chain saw better than the wire saws for all the reasons stated by other posters.
I have always hated those things. They tear up your hands and break at the wrong times. I would recommend a trusty hatchet or axe, or at least a good knife. They have a better range of use and will never let you down.
Just bought a pocket chainsaw. Not in yet because I mean I just now bought it. Never used one before, but the ideas and comments in here talked me into it.
I can see how it would be easier to use than the hatchet on my BOB. If it is all that I will get one for the GHB as well.