I've gotta stop coming in here. I went with Manta, but seeing the pics of this are making me nervous.
I definitely like this Steelbook more than Manta's, and I think the fullslip is mostly better too; it's more fancy, but while from a design point of view it works having one character on the front and back, it sorta doesn't fit the movie. I'm not fussed about the lenti and think Manta have won on that one. As for the box, there's something kinda cheap looking about it, but I do like the thick hardcover book.
This steelbook wins over Manta, it's the Star of this release, but from what I have seen Manta's Fullslip and Lenti looks like a bit more attention to detail was done. I think the Manta slips will look nicer in hands...but hey who cares love all those La La Land Releases they all look really great