Aire is built up in Idaho, NRS is another Idaho company, but there rafts are manufactured in Mexico.
I have run NRS boats since I started rafting 17 years ago, they are bomber, my E-140 has been around since '95, and I just took it down the Grand Canyon, though I had to top off every day do to a slow leak that just started.
Aire has a good reputation, and a 10 year warranty instead of 5 on NRS boats.
An Aire product would be lighter, as they make there boats out of PVC instead of rubber, the seems are plastic welded instead of glued, PVC can be a little tricky to glue for a patch your first time. Both methods of building a raft are fine, in my opinion.
Between those boats, I would expect the Super Duper Puma to be a little livelier as a paddle raft, though the NRS will track extremely well, with the ribbed floor design, give em a little momentum and they tend to just go in the direction you point them, all things being equal.
A 14' can carry a decent amount of gear, though not really what you would get if that were your main use. I can run up to a two week trip with two people as the only boat on the trip, but I have had plenty of time learning to pack gear down efficiently.
I mostly recomend the 13'-14' range as something that should be able to meet all your current needs, paddle up to 7, be small enough to make it down the Rio Chama at decent water levels, and still be just big enough to pull of an overnight trip with your group, as long as you can put some people in other craft( it will still be tight, but should be doable).
I think both of those boats are quality rafts, and could be something you'd be happy with.
If you end up buying used, there are usually lots of boats that pop up towards spring if people upgrade, some under the classified section on this site, some are good deals, but be careful, there are some good threads on how to check out a used boat before you buy it, just use the search button towards the top of this page, and you should find some info.
A new boat with a warranty is awesome if you can invest the money in it, get something decent, so it holds some value.
Last, many people will say that the Royal Gorge is only class 3-4, back when I guided trips down there, we called it class 5 to, and it used to be, but as boaters and equipment have improved, harder sections are now being run, down grading stretches like the Royal Gorge. And if you're guiding a paddle raft down there at high water, and people don't listen, or go for a swim, it sure FEELS like class 5!!!
Such an awesome stretch of river
Hope I have not given you way too much info!
P.S. both those boats will feel kinda big R-2 ing, you still can do it, just will feel like a lot of boat to move for two. Also, the black strip of rubber on the top tube of the otters on the web site, could burn people's butts, maybe ask about a blue ware pad if you go that route.