Two or three considerations I'll offer--the above comments are great, but I'll add a couple:
1. For prying, and taking lots of lateral stress, without breaking, the chiruwa ang khola is the best. When you get it, chop it into a stump and lean on it hard, back and forth, a few times. The idea is that if you happen to have landed the very unusual one that DOES break, you do it in your back yard when it doesn't matter, instead of way out in the forest when it really does matter. If it breaks, just send it back for warranty replacement. I've never, ever had an H.I. khukuri break, but I do this every time so as to have maximum confidence in them. (Ask yourself: what other company will let you actually TEST their "tough survival" knives this way?)
2. There is one potential downside to the ang khola family, especially the chiruwa: they're thick. This can make it an awkward slicer--so, if you want to be cutting up salami on the trail, it can take some adjustment of the angle. And, hey, it's a big knife--big knives in general have their unwieldy moments. The somewhat-slimmer BAS and WWII and sirupati and Gelbu special will be a little more maneuverable for non-hatchet functions.
Also, they're pretty big on the hip (and the curve makes them look a bit like a pistol, to the uninitiated--just bear that in the back of your mind.) And heavy. For some of these reasons, I often end up going to the smaller British Army Service model, which is a credible chopper, but noticeably lighter and less unwieldy than the massive ang kholas. While I'd definitely go to an ang khola over the BAS if I wanted to use a khukuri as a prybar, I can usually find a real prybar when I need one. And I've never broken a BAS by prying, so I'm not sure how hard it would be. Might take more strength than I have, in spite of the less-massively-thick blade on the BAS. Not to slam the ang kholas--I love them, and I try to get one for each of my sons (which, by now, is adding up to a lot of knives!)--but I'm just trying to help you decide on the right tool for your purposes.
3. You really may find that the 15-inch overall length (10 inches of which are blade--so we are not talking a little knife) of the BAS, or the 16.5 inches of the most common chiruwa ang khola, just fits on your belt, or in your pack, a bit better than an 18 inch khukuri. Though I love the big choppers, and 18 inches plus seems to have been a favored length historically among the Nepali people, when I have a knife that big on my belt, I feel a little like I'm just a draft animal for the knife; it's just a little more obtrusive.
4. I like both horn and wood. Horn is very tough, and has the surprising quality of getting just a bit sticky (in a good, comfortable sort of way) when wet. It is thus not nearly as slippery a handle material as you might think if you've not handled a knife made with that material. Both horn and wood can develop cracks (which usually are not, in my experience, at least, enough to compromise performance seriously). I think horn has a little more interesting character, unless you're getting some kind of super-special wood. Either way, you'll probably want to oil the handle material (I use olive oil for the horn, and some kind of wood-appropriate oil for the wood. Take care lest your oil be the kind, like some "boiled" linseed oil, that has more lead or cadmium-containing drying compounds than you want to be handling and preparing food with.) Horn is said to be better if you're contemplating getting it wet a lot.
Have fun!