What other Hunter's Machete's upgrades would you recommend?

Thank you! It's silly but I am terrible with numbers sometimes, I always use indeed 6 cdr and 3 mr runes, edited in the guide thank you so much for pointing it out, was a bit silly..

I see quite some people taking full cdr runes (scaling as well flat) but I prefer a strong early/mid over a strong late.

I also enjoy true burst damage over attack speed as well, I put them in the runes but not in the build further so we agree on this ^.^

Thank you one more time to point out the mistake I still feel so silly about it x]

It should be 6 flat cdr blues and 3 mr runes. The seventh flat cdr doesn't help that much, as 6*0.83=4.98 I don't think a rune is worth it if you only get 0.02% cdr out of it or gives you a really weird cdr number.

Since you said that you like messing with cdr, you could go full cdr/lvl glyphs. At 18 with Warrior+Visage you would hit max cdr. Course you wouldn't be quite as tanky (lose about 5 mr) and you would lose out on the early cdr until level 9, but Void Rush would be at a lovely 42 second cd.

Edit: As for Warrior vs Devourer, I think you should really keep in mind the AD scaling on E. It will do almost no damage early game with Devourer. Of course Rek'Sai would have more dps with Devourer, but true damage is just so tasty!

Thank you for the comment!
I prefer warrior since I have enough (for my taste) as in my runes + the cd reduction is very beneficial and makes rek'sai even more mobile (more tunnels, lower cd on ult). I prefer mobility and burst over attack speed, and this way I combine both in best balance.

I wrote a little in my guide about this to:
"If you are with AD runes I would definitely recommend Devourer over Warrior. Attack speed gives you on hit magic damage and is scaling when you are ganking while warrior gives flat AD, armor pen en CDR".

With the focus on attack speed have you though about using devourer instead of warrior? Or is it the CD reduction you want on warrior?

Ok, Will try attack speed on some matches ;D

Thank you for the reaction! I will put my view on this in my guide, for sure you can start with AD runes it is the fastest clearing and strongest for early game but I really think Attack Speed is the way to go, with that she skills better in late game (this is for a lot of Junglers) ^.^

Nice Guide,
Saying this because, although i'm not ranked yet (lv 17), i used something like that build yesterday, and it worked pretty well.
I just don't think that attack speed is better that attack damage, because of her Q.
Her Q makes her next tree attacks faster, stronger and AOE so, it escalates batter with AD.
And ecaling better with AD, "Infinity Edge" makes it better to go for the Kill.
About her life, most of the time i survived long enougth to go back by a tunnel nearby so, i think that you can counter her low Hp with strategy ant Possitioning.
Sorry for the bad English (BR not-Hu3 here, a rare thing nowadays) =D