I have a Puri Ultima SS1, it's charcoal fired ("restaurant charcoal" is a must, burns much hotter than the supermarket stuff - get it from Amazon). The Puri also has a gas-bottle option available at extra cost, it's a baffle plate that sits on the bottom, and is for convenience as you don't have to mess about with charcoal and ashes but according to Puri the taste is better with charcoal.
Due to the unpredictable weather I don't use it as much as I should, I bought it for naans, and unfortunately I can't run it inside the garage as both the car and the gas boiler are in there.