Just picked up the titanium book cover. I haven't like Samsung covers in the past but this is a very nice case. I agree it's way too expensive, but I had a 50% off from Samsung from my note 3. It's very slim and fairly light(though definitely adds weight). The magnets are super strong, and the folding positions are nice. Yes it's hard to unsnap, but I found if you stick a finger in the middle and sludge left or right it comes out ok. No issues snapping in.
my only gripe is the flap when closed actually isn't tight across the screen and if you squeeze the edges it opens a bit. Not a big deal.