If you see an H17 8 Decker that cuts off half a deck, I think that is a game that one should be happy to play.
I have on occasion seen such games in my parts.
All things being equal 8D H17 should be avoided.
However, one must look at the big picture, not just the # decks and rules.
Also, one must look at shuffles. A beatable shuffle can easily make up for the difference between H17 and S17, and then some. IF you know how to exploit it.
Harrah's H17 8 deckers offer nothing worthwhile, and should be avoided as a sucker game. Same with many Atlantic City games.
Nevertheless, some good 8D games exist, and some of them even have H17.