I have the Coleman Roadtrip. Not sure of exact model. About $250.00 at Camping World. Red with two slide out shelves on each side.
For storage, I have a Four Winds 31y and it has an large back storage area.
All I have to do is collapse grill, pick up, and get the two wheels through the doorway, and it rolls right in. The collapsing and raising of the grill can be done with one foot and one hand after a few times, very easy and convenient.
For cleaning, it was terrible the first couple of times. Then I learned once you fill up the bottom with water, and then don't roll it around the campsite, all the waste goes in these well designed troughs, then just dump this water out of the way. From there I can clean the rest of the grill with about 4 paper towels. Very easy.
Cooking, take this with a grain of salt. I'm not picky. It does well, but gets hot really quick.
We also switched to the griddle piece on top instead of the slats. These are about an inch thick and really cook some great stuff, whether peppers and onions for fajitas, or thick steaks for all. Spreads out the heat very evenly.
Propane, I either use the 1lb green cannister, or the quick connect to my campers LP tank. I refill the green canisters when I get a few empty (going back to my Scoutmaster days).
Oh yeah, ensure grill is level before adding all of the water in the bottom.
I've had a few other grills I won't name (people take this grilling stuff seriously), but they have all been sold or given away.
Here is a picture of storage area on camper, and grill in action.