Congrats on some good choices. I suggest that you work with each, to make sure that you can manipulate it quickly and safely under stress, especially the Spike. I love the looks and design of the Spike, but the hilt doesn't fit my hands well.
With inexpensive knives, I think it's worthwhile to buy a 2nd one and grind/file off the edge and point to make a practice blade. This gives you something safer to practice with (you still need to be careful).
Use them in good health!
Dirty Bob