I have owned about 35 various Khukuris, and used most of them. Here are my observations:
1. The traditional shape of the handle has a rather sharp edge where your little finger wraps around the handle. On extended chopping, this sharp edge really digs into your little finger. You will probably end up smoothing off that sharp edge.
2. You don't want a round handle because it can roll in your hand.
3. The full tang models are much stronger and allow you more flexibility to change the handle shape to suit your needs.
4. The long thin sirupati type blade about 15 inches is a really nice shape for fighting and general use. The 12 inch blade is better
for all round use. Remember that the khukuri was originally more like a farm implement used to dig, chop, pry and do all sorts
of other things. They are extremely useful, and although the sirupati pattern is really beautiful, it lacks some of the utility of
the 12 inch long blades.
5. Many traditional blades are forged out of old vehicle springs, with Mercedes truck springs being the favorite. These often end up
being between 3/8 and half inch thick. A 1/4 inch thick blade is PLENTY thick enough for anything I ever needed to do, chop or
pry.
6. The notch near the base of the blade can indicate where it is made. Most of the ones from India have a square protrusion, while
those from Nepal have a pointed protrusion in the middle. Generally, the ones from Nepal are much better made.
7. Shop around. Many places charge 2 or 3 times what a different vendor will charge for similar quality. It really pays to shop
around. Himalayan imports, khukuri house, Gurhka house are three places worth looking at. Don't overlook Cold Steel's offering
just because they are made here. The ones from Cold Steel have very good steel and handles unless you are stuck on tradition.
I think that for most work, the bowie and khukuri are the two most useful blade shapes available.