Based on what I have seen and learned from others on the interweb, I would narrow the list to 1, 4 and 5. We have been very happy with our Flagstaff (Forest River), the interior seems very nice to us. Not to add to your list but they do have a
831BHDSyou may want to consider.
I am sure Rockwood makes the same floor plan and they can be had on RV direct.
Forest River offers a second full year of warranty for $200, although we did not have to use it.
Good luck!
2017 F150 SCREW, 5.0, 4x4, 3.55 axle
2012 Flagstaff V-Lite 21WRS (Sold) back in the market
Equal-i-zer WDH 1K
Mary Beth (DW)
Kirby & Khloe (camping pugs)