Edit (late): I misunderstood Balfour’s comment about “reversed winding” – I thought he meant the direction, rather than where they were in relation to the peg hole and neck. Whoopies!
That does bring up a difference though between the two makers. Dusty came up with pegs that are not tapered but straight and threaded; Triplett uses tapered ones that are similar to those on a pedal harp and most wire strungs. The DS pegs are easier to tune in that you don’t have to push to keep them firmly set in place. OTOH tapered pegs can be more finely tuned as they do not stick as the threaded ones sometimes do.
Sorry for the confusion but I think Balfour’s observation about both how the strings are wound and my own regarding the different kinds of pegs are relevant to you. Bottom line: Tripletts are good harps, so are Dustys, both makers have been in the biz a long time.
Happy harping whatever you choose!