Nembutal. Why? Think!
This is for death by train suicide, but applies to jumping as well:
"In the section
Most lethal methods of suicide, the study quoted an expected average time to death by this method of 17 minutes. As long as consciousness is lost quickly, the death should be relatively painless, but if consciousness is not lost, it could be an agonising method."
17 minutes! Can you imagine choking on your blood for 17 minutes? That's an eternity.
Now look at these statistics for Nembutal:
Time To Death Number of
people/percentages
0–15 minutes 39 people (32%)
16–30 minutes 40 (33%)
30–60 minutes 21 (17%)
1–2 hours 9 (7%)
Euthanasia by doctor after > 2 hours waiting 9 (7%)
Unknown time 5 (4%)
Total 123 (100%)
Nembutal is the smart way.