I got the Warwick Rockcase RC23010B recently.
https://www.thomann.de/gb/rockcase_rc_23010b_effect_pedal_case.htm
It's probably not as sturdy as the one sold specifically for the Helix, but it doesn't look like it's gonna fall apart anytime soon.
It also comes with just a thin layer of fabric (sort of the fuzzy side of velcro) at the bottom, no foam padding.
But it's LIGHT, and that's what sold it to me. It's a great fit (same size or very close to the Thomann case mentioned above), in less than half an hour I cut out the necessary spacers from some packing foam I had laying around, but almost only for decoration, as the top of the case has good padding that holds the Helix perfectly in place by itself.
For two rehearsals a week, two gigs a month, I don't think I need more.
