I have a couple of these palettes. No logo, all black. Definitely not as sturdy as the MAC palettes. My main issue with them is that the MAC pan only eyeshadows that come with the magnets attached don't stick to the pans. They fall out so easily so you really have to be careful with how you handle them. You could of course attach the round steel stickers to the bottoms but then you cover the names and they will no longer stick to any MAC palettes.
I agree that the magnets on the back of the MAC eyeshadows are not as strong as the Inglot and Urban Decay pans, but when I flip my palette upside down, none of the MAC eyeshadows have fallen. I actually like that the magnets on the back of the MAC eyeshadows are not as strong because they're easier to remove from the palette and easier to re-organize. The Inglot and Urban Decay eyeshadows are soooo magnetic that you really have to be careful when you remove them from the palette or else you might nick/damage the eyeshadows.