I'll put a recommendation in for the Holland Companion also. Like one of the other posters I have a couple of thier patio models and am using my 3rd Companion presently. Its the third Companion not due to wearing out or anything its just most of my inlaws love how they cook down in Miami when I snowbird so I have left two down their.
I bought my third one (Companion) last summer and price was $249. Like some of said if you are a griller who wants to eat in 10 minutes or wants to stand in front of a grill and flip your food all the time this grill is not for you. Yes it takes longer to cook but the wait is worth it. For example a split chicken breast takes about 70 min to cook. Remember no flare ups associated with this grill and the skin is like a potato chip when done cooking.
The grill excels at chicken and for some reason bacon. It does a tremendous job on burgers, chops, fish, porkloins and turkey breasts. It does an adequate job on steak.
I used to use the 1 lb bottles all the time however, two years ago I bought the adapter and now use a 20 lb cylinder all the time. I recommend if you buy a Holland to buy the adapter its much easier to deal with if you have room in your RV.