Evaluate the Sacrifice

Hi chess fans,

I thought I would provide puzzles from a few fun games of mine. The twist on these puzzles is that out of the three positions, only one of the puzzles has a winning tactic. Another sacrifice lost quickly and a third is OK, but not clearly better or worse than quiet play. See how you can do.

1. Should white attack with Bxe6+ (followed by Qc4) or continue quietly with Ba4?

2. Should white sacrifice on h7 or capture the knight?

3. Should black sacrifice with Nf3+ or continue to build up kingside pressure with Rh6?

You can find answers in the comments.