Re: Difference is casting rod wts ?
Basically, and that is using the expression in extreme, things are somewhat the same. However, as with any change of rod and line there will be differences. Since you would be moving up in line weight there will be additional energy needed to preform the same casts as you would be doing with a 5 weight.
I fish with a 9' 9 weight rod a lot. The rod is an old Orvis Silver Label with a DT 9 floating line. After you become accustomed to the rod it seems pretty easy to fling fairly large flies with it.