I use the regular EWG trokars in 5/0. The hookup ratio on the HD seems to be worse on the Gamakatsu HD(Superline) compared to the regular EWG(never bought the trokar HD hooks because of my experience with the Gammys), maybe because of the extra girth. But if your using braid or 20#+ line, you might wanna consider the HD. If im not mistaken, thats what the HD hooks are made for. But if youre just using regular line, I would recommend the EWG. And Im gonna warn you, those trokars are sharp. So sharp the tear up your plastics.
I only use trokars for 5/0 and bigger, because anything smaller that that I believe all that extra sharpness is excessive. But I give the trokars an A+ rating in the 5/0 size. But its hard to justify all that extra sharpness when you can get 25 Gamakatsus for the same price as 5 trokars. Both are great hooks though. But when using a big worm texas rigged like the Ole Monster or Magnum Trickworm, IMO trokar is the only way to go.
Just my 2 cents.