If you use a decent wood camp stove (vs campfire) you needn't worry about a time consuming hunt for wood, at least not in the woods. I recently tested my home-made wood stove (6.5 oz, fits inside my 2 liter pot). Under 1.2C ambient temperature, it boiled (rolling) 0.43 liter of 13degreeC water in 4.8 minutes using 73 grams of wood. Thats a small branch or two. I can usually spot enough wood for the evening and morning meals in less than a minute.
There's one caveat. The woods around campgrounds and trail shelters are picked clean, so plan ahead. When you're ten or twenty minutes from camp, start looking for your branch(s). Use only deadfall, because it will have dried out. Green wood doesn't burn well at all. Rain-wet dead fall is usually only superficially wet. Pealing off the bark uncovers well seasoned wood.
My stove consists of a steel combustion chamber with a half-inch hardware cloth grate at the bottom. There is an air gap between the bottom of the combustion chamber and the bottom of the stove. The outer wall of the stove is made of aluminum flashing. The gap between the combustion chamber and the outer wall is insulated with fiberglass to minimize heat loss. The outer wall has 7 half-inch holes on one side at the base for air entry. There is also a windscreen/pot-stand that stores in the combustion chamber and mounts to the top of the stove for cooking.
Photo of all steel prototype:
I charge the stove with a few leaves at the bottom of the chamber, pencil sized chunks in the middle and up to 1/2 inch thick pieces at the top. A squirt of alcohol followed by tossing in a match and you're in business. If I need to recharge, I lift the pot and throw in more wood.
The bottom of the stove is also double walled so it can sit on a picnic table without burning it. The bottom comes off to remove the ashes.
The Bushbuddy will do all this for you for somewhere around 100 bucks, and you make your own arrangements for a windscreen. Or you can invest some time with various sized coffee cans, flashing, a pop riveter, tin snips and hardware cloth, save the money and have a custom stove sized to fit in your pot.
I decided to come back and include detailed test data in the first paragraph because I'm a little weary of the plausibility arguments and claims for efficiency unaccompanied by hard data that are so prevalent in stove descriptions. By the way, using a fairly standard 110 grams of wood to boil a liter of 20C water, the efficiency of this stove nets out at 69%. Is that good? I have no idea since I've never seen any decent data on any of the popular backpacking wood-stoves.
Whatever you decide, try it all out in your back yard. That's how I sold myself on my wood stove for long distance hikes. I still use a soda can alcohol stove for the short trips. Good luck.