I have a Titanium Goat small round stove and bought the parts necessary to convert it to the medium size which is 18" long. The small is 12". The owner of Ti Goat passed last year and one of his employees has taken over under a new name Ruta Locura. Not sure if they are still making stoves but I was able to order parts for my conversion last summer. I also have a large Kifaru box stove that I use in my wall tents when I am trying to conserve weight and bulk. I have also used a couple seek outside box stoves.
All small titanium stoves are going to be a bit finicky compared to standard large steel wood stoves. Due to the small size they can be a bit difficult to get them to draw well right off the bat if atmospheric conditions are bad. This usually isn't much of an issue and I have found that by angling the stove pipe so that the top hole is facing away from the direction the wind is coming out of keeps this from happening for the most part. Also helps to start the fire more towards the back of the stove closer to the pipe exit. Once the stove builds up some heat it isn't an issue.
Since they are small and are made of very thin sheets of titanium, you can't really expect them to hold coals for long periods of time with most types of wood. They will get a tipi or small wall tent very warm while they are going. I have sat around in my tipi in my boxers while it was 10 degrees and blizzarding outside. With the right size and kind of fuel, I have had enough coals 7 hours later to get a fire going.
I really don't think you can go wrong with any Ti stove from a company that has been around for awhile. Some are made to be bare bones and as light as possible and some focus on strength and functionality. Depends on what you want out of it and how much you want to spend.
All the stoves that I have used are a bit challenging to set up the first couple times, but once you get the hang of it, its pretty easy. They are a bit delicate, but as long as you don't drop a log on them or step on them they hold up pretty good.
Depending on what you have available for fuel, they can pump out small sparks out of the end of the pipe that sometimes fall down onto the outside of the tent and occasionally burn holes in the tent. Because of the drafting issues most companies don't recommend a top of the pipe spark arrestor, but I have been using one lately along with a slide in arrestor at the base of the pipe and haven't had any issues and it seems to help with the sparks. I keep a small roll of tenacious tape with my tent to patch any burn holes. I also often pack along a small folding saw to cut larger branches to the right length to fit the stove. This isn't as much of an issue with 16"+ stoves but for my 12" stove I had a hard time getting large branches broken to a short enough length.
This is the 12" Ti Goat stove the first time I set it up. These stoves are pretty bare bones but very light. I have been happy with it.
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This is my Kifaru large stove set up in my Seek Outside Courthouse tent on a fly in moose hunt in Alaska.
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