Urggh - hexi!
Actually, if you're looking for an alternative to hexi and want a wood-burner, I can thoroughly recommend the Emberlit. Very light, packs totally flat, and allows you to feed in long pieces of wood to avoid the hassle of continually removing a pot to feed in more twigs. Its not a gasifier, but still very effective. I think I had a post on it somewhere - I'll look it up.