I don't own anything by Harmo but question the quality based on the fact that it's rebranded cheap Chinese stuff. That being said, I do own one of the small Hohner Flex Cases and like it quite a lot. It only holds 7 harmonicas but they have two larger versions, I'll link 'em all here:

Medium: https://www.amazon.com/Hohner-Flexcase-M-Harmonicas-Medium/dp/B0835S2PFC

Large: https://www.amazon.com/Hohner-FlexCase-Harmonica-Flex-Large/dp/B0835SBCH8

XL: https://www.amazon.com/Hohner-FlexCase-Extra-Large-Harmonica/dp/B089CXVGH3