Yo guys!
I scooped up a UDG case for my helix over the weekend and its a fantastic fit with heaps of side padding.
https://www.udggear.com/udg-urbanite-midi-controller-sleeve-large-black
Really happy with it! and it was pretty cheap as far as cases go here in New Zealand. I wanted the Mono m80 but it was gonna cost me like $300-350 to get it brought into New Zealand. :(