A BIG vote for CAMP CHEF here!!! I chose the PRO 90 three burner. It has a shelf on both sides and the legs fold under without having to remove them. The down side with this model is that you have to buy the grill box separately and it's more expensive. For me, it was worth it. I highly recommend buying the steel griddle that covers two burners as well - I can fry up a whole package of bacon as well as some sausage along the top all at the same time, and then follow up with about 10 or more big pancakes all at the same time for the whole family to eat breakfast. The grill box makes use of the drippings to "smoke" the meat as it cooks. I can grill chicken and have a huge pot of corn on the cob boiling beside it. It's the most versatile, biggest capacity, easiest to set-up cooking option for camping, period. I discovered it by walking campgrounds looking at how people cook, and then this guy set one up right behind our TT in Myrtle Beach one year and showed me all about it.
I opted to not use the quick connect on the TT. Instead, I carry a separate tank and set up the whole "kitchen", including a folding table for preparation and serving, under an EZ Up square canopy. That way I can do the whole cooking thing dry in the rain or cool in the sunshine.
Now one more thing - If you do use this option, definitely get the optional covers for each component. They make it easy to carry and store, plus it keeps the any remaining cooking mess from getting on you or your other things during transport. I found Amazon to be the best place to get everything from.

