Been looking at a new Entegra Cornerstone versus a 2002-2006 Prevost conversion. Entegra markets their coaches as the most quiet motorhome. On the Entegra owners site,however, their are entries of owners complaining of excessive road noise and wind noise around the windows. My question is: how quiet should I expect a Prevost conversion to be? Are you guys always fussin' with wind noise around windows or side mirrors or chasing down excessive road noise issues?