I'd recommend the Emberlit. I had the stainless steel version (11.3 oz), and not only is it very strong - see some of the videos on youtube with 6 galls of water on it! - but they now also do a titanium version (5.45 oz) which they say is as strong as the s/s one. (Sold the SS one to fund a TI purchase). The cross-pieces allow the use of any sized pot, which not all stoves do.
Apart from the flat-pack nature, strength and weight, the main benefit to me is that you can continuously feed long lengths of wood into the stove, rather than all the hassle of cutting up small twigs and trying to feed them into the top of a stove around the edges of the pot. Its not just a hassle-saver, it also makes it easier to control the heat of the stove by withdrawing the wood, or just using the charcoal from the burnt wood to simmer with.
Apart from the flat-pack nature, strength and weight, the main benefit to me is that you can continuously feed long lengths of wood into the stove, rather than all the hassle of cutting up small twigs and trying to feed them into the top of a stove around the edges of the pot. Its not just a hassle-saver, it also makes it easier to control the heat of the stove by withdrawing the wood, or just using the charcoal from the burnt wood to simmer with.