A few words on the weber Q line, my 10 year old baby Q in particular. They aren't as portable as some of the other models available and take up more space. If you have plenty of space like inside a truck camper shell, or a large open compartment, the whole shebang is easily carried in and out.
They can run off the blue propane bottles commonly used for propane torches available at hardware stores, the green coleman style propane bottles with the bottle bracket on the barbeque removed, or any other propane bottle using a hose with appropriate connectors. I can run mine for many days off of the blue bottles.
They are built to last. Mine is a bit over 10 years old, used year round here at my house, and has had no failures. It's stored outside and when I take the time to clean it, cleans up very well. I added a rolling stand and grill steaks, burgers, chicken, pretty much any protein that will fit. Peaches, honey, and brown sugar, foil packet veggies, even potatoes. There was a learning curve for me but the grill will cook it all if you take the time to learn the hot spots, cool spots, etc.