Controller to go with Feigao 10L?

[Raddick]

Hello, I'm currently working on a brushless conversion for my Hyper 7 PBS buggy and I was using this article for reference: Click here for Article

I was planning on using the same motor and controller combo (Feigao 10L with Warrior 9918) but I can't seem to find the 9918s anywhere anymore. I figured the 9920 on RC-Monster now must be an updated version or something but those are sold out also. Is there another alternative that I could use? Or is there any other place where I might find a 9918 or 9920 controller?

Thanks