I've choosen this hard case for multiple reasons. Wanted a hard case which is lightweight, but can withstand impacts, scratches, CATS and prooven it's durability during the years. I have an Arturia KeyLab 49 MkII and that's why I bought this hard case.
The zip-lock is durable and strong. Never get stuck during several months of use. Scratches not visible on the case thanks to premium quality and durable materials. The holder is good enough. The inner dampers are perfectly aligned. I can not tell any wrong about this case.