Just wanted to show you guys what I purchased for my Helix last week. If you need something heavy duty then this is for you. It is big and heavy. With my Helix and volume pedal in it , it weighs about 35lbs. Not a bad price for what you get. The only cons so far are 1. You need to add some more foam to the lid to keep the Helix firmly in place while closed and 2. get some better Velcro than the stuff they send with it.
https://www.amazon.com/PDC-4100G-Flight-Pedal-Case-Heavy/dp/B00QCHOL2S/ref=lp_2587438011_1_3?srs=2587438011&ie=UTF8&qid=1489512164&sr=8-3