I rarely fish anything but DT lines, though that might be because I’m a bamboo guy 99% of the time.
It seems that DTs have a lot of advantages (mend well at range, you can carry a lot of line without your loop opening up, reversible after I’ve done something stupid to one end, etc) and only one disadvantage, which seems minimal — you can’t shoot line quite as well.
It’s not as if you can’t shoot line at all, and frankly I think the difference is small outside of the saltwater arena, one of the three places I *do* use WF lines.
The real beauty of a DT is you can reverse it when one end is worn — a fact which I’m sure has not escaped the notice of line manufacturers, who seem
intent on selling WF lines, and why not?
For everyday trout fishing, I think the DT just makes more sense.
TC