Fred- when you say the Method wont replace the TCX- (7wt) are you saying it lacks the raw power of the TCX?
How do I determine a correct line wt for my personal casting style
Have my partner stand along side the rod and watch the bending when launching the forward cast. If the rod bends only in the upper 1/3, I believe the line is too light. If it bends into the middle and slightly below,,, that is the line I like best. If the line is too heavy,,, the rod will cast it however, watch the outgoing forward cast lower loop,,,, it will drop or open up and plow early in the cast and not give you the line speed and distance,,,, with your individual casting style/stroke.
We have 5 people in my fishing group that own the 7126 TCX,, three like a Scandi of 510gr,,, two of us change up,,, Scandi 485gr for max line speed and distance and Scandi 510gr for slower more comfortable casting. We do not use the rod for Skagit lines,,, that type of line goes to the new Sage ONE or Z-Axis rods.
The 7126 Method was tested with Scandi 450gr & 485gr, to me it liked the heavier line but it was very nice with both. The Method flexed deeper into the rod blank wrt the TCX,, less reserve power for "getting on the cast" for that additional distance in the wind,,, the TCX has more power = yes.
To confuse the issue, I may test the 8126 Method with Scandi 485gr and 510gr against the 7126 TCX,, may be surprised at the results.
I do not consider the TCX designs to be very stiff or fast action,,, they are just slightly less flexible into the lower 1/3. They do require better timing to gain the maximum performance.
Personally I like how the Method rods cast and will most likely purchase a 6126, wish they made a 5119 Method.