I've not tried DN, because I tend to shy away from solvent based stuff.
I've used D2T, Etex, and now Nu Luster 55 UV inhibited.
There are several things I've found that really distinguish one from another.
I've found the D2T is a very hard, brittle finish. When I used it on sectional wooden swimbaits, any rock contact (by others, of course, not by me ) would result in flaking off of the top coat in large sections. I think the wood is flexible enough to bend under impact, and that the D2T doesn't, so it cracks.
I use D2T now exclusively for plastic bait repaints and for coating the inside of wood swimbait joints. The plastic is rigid, so the top coat is never flexed. On the swimbait joints, I wanted an epoxy that wouldn't sag, so I could coat all the little areas while the baits were unassembled, without having to put them on a drying wheel. I've found the D2T is just right for this, as long as I don't put it on too thick, and I can assemble and top coat the lure two hours after I've coated the joints.
I've found Etex to be excellent for wooden baits. It is a tougher, more flexible epoxy, so it handles impacts far better, and doesn't delaminate, like the D2T. The only thing I don't like about Etex, and it's true for D2T also, is that it yellows with exposure to sunlight.
Which brings me to Nu Lustre 55 UV inhibited. It has all of the characteristics of Etex, but it doesn't yellow.
One common complaint about epoxy is that it doesn't like sharp edges, and tends to pull away from them as it sets, leaving exposed areas.
I sand my edges on my swimbait joints so they're soft, and then coat with the D2T, which I lap up onto the face of the lure about 1/4", so there's a continuous film from the inside of the joint onto the surface. Then I assemble the lure, put it on the wheel, and coat it with the Nu Lustre, and there is a good overlap of one epoxy to the other without having to get wet epoxy into the joints again, which is a nightmare.
Lastly, someone on this site, who trolls lures back east, suggested "T"ing my trebles to prevent hook rash. It has cut down on my hook rash 95%, even on jerkbaits and cranks.
I hope this helps.