My twiggy takes practise. Like any fire of course, always have ample supply of wood already at hand. I like that the Littlbug Senior has a large capacity for fuel, and that it's easy enough to feed without removing the pot on the boil. And it's extremely light weight. And come in only four simple parts; no small pieces to misplace. Having said all that I'm tempted to try others. They all look good to me. Those gasifiers burn cleaner/hotter.
I'm getting used to cooking on my twig stove. Fire it up and build some hot embers for dinner, dessert and coffee. Feed a couple larger sticks in as you go. But I tend to get impatient and hastily place my pot on top while it's still flaming. My pots get awfully sooty that way. I also time dinner for later in the afternoon or evening so the fire becomes our campfire later on. It's amazing ( to me ) how you can so quickly ramp up a small contained fire, cook on it, and have it burn itself out within the hour; ready to move on after a hot breakfast. Not many cinders left to douse if you don't overfeed it, and get the fuel feed and cooking time just right. I'm still practising.