Should I get Zed or Kha'zix?

So I've been looking to get a new assassin champion lately and I've been looking mostly at Zed and Kha'zix. I can only afford one at the moment and I need help deciding on which one I should get. I've played both during free week and found to be quite entertaining champs.

Now I know that Zed is probably the stronger pick of the two, but at the same time I imagine myself playing jungle more, something I'de find more valuable in Kha'zix. Although that doesn't mean I wouldn't play mid or Zed at all and I would love to try Zed top if not just for laughs and niche picks when I play draft mode.

Also, if it helps, one of my favorite assassins is Talon, so if that might give any of you assassin mains an indication of which champ of the two would be more fun for me in the long run, please let me know what you think!