All of this talk about DT vs WF is only valid if both are made by the same manufacturer for the same application; otherwise the forward taper and its length will vary, as will the suppleness of the line.
I like to try all different lines on a light line rod until the rod "comes alive". Not only is this entertaining, but enlightening. Once I had a 9' 3wt cane rod that didn't respond until I put an Orvis Longbelly line on it, then it felt just right. This form of blind taste-testing is also valuable because it incorporates your unique casting stroke [I don't have a casting stroke - that is what others have when they watch me cast.
So, get some friends together at a pond, provide some refreshments, and have everyone bring as many lines as possible. Cast and enjoy!