Hi Lolly,
Last year there was a long discussion thread about the Cobb BBQ on the Eriba Owners Club forum.
In summary, a group of people had bought the gas powered Cadac griddle, some had bought a more traditional gas BBQ, and whilst they light instantly and are very convenient, there's just something missing.
After this a group bought the Cobb and used them for roasting, baking vegetables, and conventional BBQ - and everyone that bought a Cobb has really liked them.
The Cobb is moderately easy to light (easier than a conventional BBQ)
The Cobb seems to run for hours on just a few bricketts - which is great if you are cooking a meal - but not so useful if you only have something quick to cook.
If you need any specific information I'll ask the guys on the Eriba forum.
Robert