Which of these methods is the best bet for space propulsion?

[Maximum7]

1.) Ion drive

2.) Black hole starship

3.) Fusion Rocket

4.) Fission sail
https://en.m.wikipedia.org/wiki/Fission_...

5.) Halo drive
https://arxiv.org/abs/1903.03423

6.) Horizon drive
https://www.tsijournals.com/articles/pro...

7.) Pitch drive, Diametric drive, Disjunction drive or Bias drive
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19990023236.pdf

8.) Magnetic sail

9.) Nano electrokinetic thruster
https://en.m.wikipedia.org/wiki/Nano_electrokinetic_thruster

10.) Nuclear lightbulb
https://en.m.wikipedia.org/wiki/Nuclear_lightbulb

11.) Nuclear salt-water rocket
https://en.m.wikipedia.org/wiki/Nuclear_salt-water_rocket

12.) Solar thermal rocket
https://en.m.wikipedia.org/wiki/Solar_thermal_rocket

 

[phinds]

There have been a number of threads on this topic. I suggest a forum search.

Also, which one do YOU think is best and why?