Best Part About

[OneWingedAngelSephiroth91]

The fact that it can go through a heavily armourd-plated machine and burst an impenigable barrior without stopping.

what's the best thing about the game ending

Weapons wern't machines. They were created by the planet's lifestream..they were living just like you and me.

they seemed very automated to me, very mch like machines

the fact that it can kill Sephy in one go

what's the best part of Jenova?

Difference between SEEMS and IS. They would living beings like you and I if any ofd this was real.
Besides, each time they are destoryed, you would see some kind of electrical lightining disturbance. The story of how they were created is proof.