CB Range discussion

Here is the situation: I am planning to buy my initial device but have some queries. For those who own the cb6000 designer series, has anyone experienced issues with them cracking? I want to find out if the designer coating adds strength to the cage. As for owners of the standard cb6000 or cb6000s models: since these cages are sonic welded, could it be that the metal locks placed on the vertical weld create pressure along this fault line, potentially breaking them? Or maybe the tapping sound from the lock aligns with the cage’s resonant frequency in a way similar to how a musical note can shatter crystal glass? Does the horizontal seam on the cb3000 tend to split open too? If you use plastic locks or zipties instead, does the cb6000 still manage to crack? I would love any answers, tips, or even random thoughts. Even mad scientists are invited to chime in just in case Tesla wants to speak up from beyond. Thanks once more, Aaronhall