I have an Edge in my F104 and a 21.5.
It used to have brakes, but it all went away last couple times it was run.
Did resets and menu checks, but brakes weren't fixed.
I liked it's small size, and didn't think it gave up any speed, but after a couple months and then the brakes went out, I'll be putting in a different ESC.
"We face each other as God intended. Sportsman-like. No tricks, skill against skill alone." -Fezzik