Zagles....welcome to Forestriver forums.
Get the 26RS.......we have the 25rs and love the space with the slide out sofa and second door, but....and this is a big BUT, we wished we went with the 26RS, actually ours is for sale and hopefully we will have the 26rs by next spring.
We have three kids also and with the younger one at 5, we can't seem to think for the next 5+ years he will like to sleep on that pull-out.
The only difference between the 23RS and the 26RS is the four bunks, same floor plan just with the four beds at the front.
Other than what we wished we had purchased, we love the Roo, no problems at all with ours and your Durango with the hemi will do just fine pulling the 26
rs, just make sure you have the WD bars and Sway control.
I see your from Ohio, are you purchasing from rvwholesalers? I believe they are in your state. I was looking at them and with the Candadian dollar being as good as it is, I may be purchasing from them myself.
2007 Ford F150 4X4 Lariat 5.4.
2006 Rockwood ROO 25rs Sold
Night's camped in 2010 36