I am in the process of getting a Class A to replace my small 5th wheel. Currently looking at a new 2004 R-vision 241, which is "just" in reach of my budget. I tried to work some self levelors into a deal, but was told by the dealer that something that small didn't need levellors. However I have seen these models advertised on the net that had them. I would like some opinions. Thank you. John H... Also, what different types are there. What does HWH stand for?