Good discussion so far. We're comparing two excellent products so you really can't go wrong here.
For a few months this summer I owned both a BB Ultra and the Tri-Ti Inferno Sidewinder kit for my 1.3L Evernew pot. I used the BB Ultra 5-10 times and the Tri-Ti just once. Lately most of my trips have been short (1-2 nights) where the extra weight of a wood stove doesn't pay off significantly in fuel savings, so I've been using an alcohol stove for it's simplicity and soot-free ways. I don't really like dealing with soot all over my pot, which is why I now only use a wood stove on longer trips where fuel weight is significant.
The Tri-Ti has the advantage of lighter weight going for it. My BB Ultra weighed 4.9oz whereas the Tri-Ti system is about 3oz. With both, I also carry an alcohol stove as backup. If you go with a bigger Tri-Ti then the weight might be similar, whereas a smaller Tri Ti will be quite a bit lighter than a BB.
With that said, I preferred using the BushBuddy for it's simplicity. It's extremely quick to pull it out, flip the top and you're ready to burn. For me, I found that the simplicity of the BushBuddy outweighed the downside of it's relatively small burn chamber compared to the Tri-Ti. That made it a tough decision....carry the heavier wood stove because I prefer using it? Or carry the Tri-Ti which weighs almost half? Using the BB in alcohol mode also didn't work that well, so I wanted to carry the caldera cone with it, but I couldn't fit that in my pot along with the BB. With soot, wood collection and trying to store everything it was just getting too complicated to use on trips were fuel weight wasn't huge.
I ended up selling the BB Ultra because:
- Only rarely (+3 days) will it save me more fuel than it weighs.
- I don't really like dealing with soot.
- Using alcohol requires carrying a number of other components and that doesn't all fit in my pot.
I still have the Tri-Ti because I like using the caldera cone with the 12-10 alcohol stove and I can't sell just the Tri-Ti. I also like having it as backup and in case I do a longer unsupported trip.
At the end of the day, I don't really like using a wood stove because of the soot and wood collection hassles. It doesn't even pay off in weight savings until about day 3 and I personally won't carry one unless my trip is ~5+ days so that the weight savings are worth the hassle of dealing with soot and wood collection.
What I would like to see is a titanium version of the BB that weighs about the same as the Tri-Ti. A 3oz BushBuddy would be more compelling. Especially if it was easier to use with alcohol. I tried using both BB components in combination with the 12-10 alcohol stove and neither worked very well. With this Ti bushbuddy, they could also make the burn chamber larger by reducing the gap between the outer and inner walls. A 3oz BushBuddy with a larger chamber and a better alcohol mode would be impressive. It would cost an arm and a leg though, and I'd still only carry it on longer trips.