Mine arrived from Backpackinglight yesterday so I've been trying it out today. As far as I can tell from pictures (and one I saw in action at the Moot), it is a Bushbuddy clone, so for the price and ease of delivery from a UK supplier, I'd recommend it over the Bushbuddy, unless you are after the ultra-light Bushbuddy Ultra.
Previous comments on the Bushbuddy probably apply, but here are a few of my first thoughts.
You do need small wood - I'd call it a twig burner. I've used up all the small stuff from my garden so I had to make some small wood from some scrap timber. As I found later, even the larger pieces here are perhaps a bit too big.
I started it with a bit of birch bark (you'll never see it in this pristine condition again!)...
...and added some more fuel once it had taken. You can see the flame shape from the secondary slots starting to appear.
I forgot to time how log it took to boil a cup of water, but it wasn't too long. I did find that the cooker seems to need fairly constant attention to keep it burning well. I'd probably say that you'd want to be using pencil sized fuel rather than finger sized, and that it ought to be topped up before the flames die down too far, but shouldn't be over-filled. I think there is going to be a bit of learning needed.
Here you can see quite well the flame shape caused by the secondary air feed.
So far it seems to be a nice luxury - a nice to have but I haven't used it enough to start raving about it.
Geoff