Zing-It vrs Dyneema vrs Amsteel

I am familar with Amsteel ( I use it for a lot of suspension stuff, tie outs etc ) but have never used Zing-It or Dyneema lines and familiar with them.

Can anyone enlighten me on the pros and cons of the two lines.

I also just got some Mountainfitter Guywire Dyneema Cord (super lightweight) and do not know if this is the same as the Dyeema lines I am always reading about on the forum or is it a variation.