There are a lot of grills for use with the quick disconnect low pressure LPG line... There are some designed for use with bottles of LPG that can be converted for use with the quick disconnect line; myself and a lot of others swear by the Weber Baby Q series of grills. I use a Weber Baby Q120 in my 210WBS. The Weber Q series of grills have the regulator as a separate assembly from the gas control valve. Simple matter of removing the regulator, substituting a male quick disconnect and then getting a hose to hook them together. I have a 4' and a 12' hose for mine. I don't like cooking under the awning and use the 12' most of the time for moving the grill out from under the awning. If the weather is poor (raining), I use the 4' line and stay under the awning just so I don't waste gas filling a 12' line. I also use a LPG Campfire in a Can and can hook my 12' grill line to its 10' gas line and have the Campfire in a Can some 22' from the trailer.
A lot of folks will use a grill designed for bottles and get an Extend-a-stay kit that hooks directly to the bottles on the front of the TT, but, mine are covered and it seemed silly to have to remove the covers every day just to use the grill when I had a low pressure port sitting right there for running a grill...