Haven't used the Orvis, but I use an RDP 7'6'' 1wt and it's a great little rod which will easily handle 2-3lb fish (and probably heavier but haven't managed to catch any of them yet).
Casting is very light and more about technique rather than force as there is little loading pressure which is prevalent even with the 3wt.
I fish small to medium rivers mainly, but also use it on wild and stock browns on reservoirs and it's so much fun, but don't be afraid to use the entire rod to fight the fish as it will put pressure on when used correctly.
http://www.rdpflyrods.com/flyrods.html