Would you recommend a certain type of suitcase, like a soft one versus like a hard case? Well, definitely the hard case is going to protect your stuff better because at times these things get stacked up or the cart, it's heavy. You know, this stuff is pushing down and it also happens again in the belly of the plane where they stack everything up. So if you're a piece of luggage on the bottom, there's potentially a lot of weight could brush down on it where the hard side will protect it or maybe the soft side of one not so good. The box is your worst idea. If you want to protect what's inside. Doesn't hold out to being a lot of weight put on it.