I guess there are two popular makes. The Beauclaire and the Cadaq. I have the BeauC, this has a very heavy and very large cooking plate, one side ribbed (no comments from Tina please) the other smooth. The gas control knob is very precise so heat levels are controllable. Apart from that, the the thing goes together easily and produces BBQ tasting food. The Cadaq is more versitile (a friend on mine has one) but I find it much more like a giant frying pan. Food tastes fried rather than BBQ'd. The cookng area is much smaller but you get loads of extras and you can even do roast meat under the roasting lid. They cost about the same. They come in fancy carry bags. The choice is yours. As far as gas usage is concerned, neither uses large amounts - I havn't notices a dent in my wallet.