I really like the look of these things and seem to get good reviews but I have two questions.

1. Will they work with a Stratocaster (I can't tell from the pics)?

2. If they do fit, which one should I get for 80's hard rock (ACDC, Poison, Cinderella, etc..)?

They'll work for a stratocaster.
And I'd maybe go for the original Vox amplug with those styles.
They'll work, definitely.

But it's really up to you, I have the metal one, and it's really straight up high gain. Even if you put the gain into lowest, it's still distorted. Try the classic rock for it.