2006 and 2007 new RVs have enticing features -- but big $$$$. Being our first RV, I am thinking a used RV risks less money and if selected wisely, can be nearly as enjoyable. I looked through the classifieds on the web at over 600. My thinking is to buy 38'-40', 2003 or newer with under 15000 miles. I considering a 2006 Tifin Allegro (very low miles but lots of living); a 2003 Safari Zanzibar, a National RV, and numerous Newmars and Fleetwoods (enough to scare me away from them). What warnings and advice can anyone offer?