Kha'Zix rework is so fun to play
I feel like different evolves are actually viable now. By changing Q from more damage to less cooldown it means that you don't always need it if you believe you can kill without needing multiple Qs. I love evoling R first because it works so well at all stages of the game. Mid game teamfights, especially in the jungle or so fun because you can stealth and get around really fast. I might try more aggressive early game counter jungling soon by evolving Q first but damn R evolve is so fun!
I've been going R>E>W