Not sure...the DT Roll Casts much better IMHO at all line sizes, you know your not dealing with trying to aerialize the back taper of the WF line. I also think the front taper of the DT is a little shorter as well.
The effect on the rod is a little more noticable with the heavier line...it loads much deeper down the rod and you "feel" it more. There are probably others here more qualified to answer this...but as I cast this 4wt dt feeling the weight in the rod helps me push (for lack of a better term) the roll cast loop farther out front.
I probably have seriously confused the issue but that is kinda the way it feels to me. Perhaps a casting pro (or a MIT Physics Professor) can put this in the proper terms... sorry...it's the best I got![]()
You have a ton of advice here and many like the TFO. Let me just say that I have the pro in a 8wt 9' rod and like it very much. I also have the Ti rod in 4 wt. I have another Pro on the way in a 2wt 8' rod. The Pro cast very well and with a good line some good distance can be acheaved. TFO has also replaced a rod for me that was purchased with a defect, this in a matter of days after I called them on the matter. A top rate company to deal with.
Tight loops - Grant
i can only reiterate the cudos of the TFO pro rods. i have a 3 & 5wt i bought for travel rods out west and did i make a good decision. since the 3wt has become my go to rod for the PA stockers i mainly fish for on med to med-small streams here. the 5wt was great on the larger waters i faced out west, the spokane, deschutes, north platte rivers. i broke the 3 wt last spring and had a new rod in 2 weeks. i also broke a scott asa that took about 4 weeks to replace the tip, not complaining about the difference but the scott people actually built me a new tip section based on the original specs they keep.
A heads-up for anyone who's interested
Cabela's has a 7-day sale going on right now, with the TFO Pro 5wt, 9ft, 4pc on sale. ($129 instead of $159)