All are great trailers for the $$. Rockwood and Flagstaff are almost identical except for outside decals and interior fabric colours. All are made by Forest River. Personnally prefer Rock,Flagstaff over the Surveyor but individual floorplan that works for you dictates which one to buy. Buy the one you really want the first time as initial cost is not that great a difference from say a 26'to32'model. Half ton pickup should be able to pull all models and get either Reese/Drawtight dual cam set up or Equalizer brand of hitches with sway bars.
2008 Cardinal 30RKLE 5th wheel sold
2006 Rockwood 2607, 2001 Traillite
55 nights 2009, 53 for 2010
44 for 2011, 38 for 2012, 35 for 2013, 51 for 2014