Pete...Here's a pic of the 4 Dogs stove I use to heat my wall tent. I purchased it last year after trying to decide between it and the Cylinder Stove. I'm sure I'd have been happy with both stoves but I think I made the right decision. Here are a couple of features it has the I feel make it the best stove.
1. Airtight Door w/ Gasket. This allows you to control the burn better and helps it burn longer
2. Baffle. Helps transfer the heat to the stove instead of letting it go up the pipe. Also makes for a better cooking surface if you cook on it. (I don't)
3. Legs slide in instead of screwing in making set up quick and easy
4. Built in handles. Sounds like a small thing but these stoves are heavy and it makes handling by yourself easy.
Good luck on your decsion, there's nothing like a wall tent with a wood stove for elk camp.