I recently purchased an iPad Air 2 and have been researching cases pretty meticulously. I decided to pick up the Logitech AnyAngle case to test; it is fairly new, so there is not much on the interwebs about it at the moment.
I won't regurgitate the marketing information that is readily available online, but did want to post my impressions.
PROS:
CONS:
While I love the look and materials of the case, and truly enjoy functionality of the cover (in stand mode and especially the magnetic performance of sticking to the front and back), I am afraid that the weight of the case is just too much of a compromise. The sharp edges don't help either. I really wish someone made a lighter version of this without the goofy angular edges, because I would throw money at them. For now, I think I will be going with the smart case and will just have to deal with the annoyance of the cover flopping around when I have it flipped to the back.
Hopefully this helps someone make a decision!

I won't regurgitate the marketing information that is readily available online, but did want to post my impressions.
PROS:
- The variable stand functionality really is excellent. You can choose your angle and it will hold sturdily, be it on a hard surface or on your lap.
- The cover's magnets are awesome. Sleep/wake works great, there is no front-flop whatsoever when held upside down, and (best and rarest of all) when you flip the cover around IT ACTUALLY STICKS TO THE BACK. This is a feature that I really can't seem to find elsewhere.
- Protection level seems quite high. There is a significant side-bumper and the cover is extremely durable and seems like it could take some abuse.
- The clear back is very tasteful, and the little ridge for the bumper material makes for a natural feel while carrying the iPad around.
CONS:
- WEIGHT. This thing is heavy. It weighs in at 342 grams, more than twice the weight of the Apple Smart Case (144 grams). The iPad Air 2 (WiFi only version) weighs 437 grams, so using your iPad inside of this case feels similar to holding two Airs stacked on top of each other. The total package is also 99 grams heavier than the original iPad. A fair amount of the weight is attributed to the cover, and I assume is added mostly by the magnetic hinge.
- The edges of the case are at a fairly steep angle, which has two undesirable results. First, the angle produces sides that are uncomfortably sharp. This is further emphasized by the seam in the plastic molding, which is placed right on the edge. Perhaps if this case was lighter it would be less of an issue, but as you hold your iPad in this case it will start to dig into your palms/fingers/whatever is touching the edge.
- The second consequence of the edge design is that the button covers are set at a very strange angle. Pressing them is a bit more natural (if a bit difficult) when the cover is on the front or in stand-mode; however, when you have it flipped around the back like a magazine, the cover obscures the angled buttons and makes them essentially impossible to press.
While I love the look and materials of the case, and truly enjoy functionality of the cover (in stand mode and especially the magnetic performance of sticking to the front and back), I am afraid that the weight of the case is just too much of a compromise. The sharp edges don't help either. I really wish someone made a lighter version of this without the goofy angular edges, because I would throw money at them. For now, I think I will be going with the smart case and will just have to deal with the annoyance of the cover flopping around when I have it flipped to the back.
Hopefully this helps someone make a decision!