Need some insight. I am interested in getting a 2010 Tioga 23B and noticed the difference in MSRP on RVGuide between the 2010 and the 2011. The 2010 is some $10000 higher then the 2011, but both units have the same floor plan and length. Why the $10000 drop in price? I do not have either near me to compare, and the nearest Fleetwood dealer is some 180 miles away. Thanks in advance!!