A couple days ago I was closing the liftgate on my wife's '12 LE and noticed that it felt like it had less resistance than usual. Opened it back up to take a look and, sure enough, the passenger side strut had blown out and there was oil running down the bumper cover. Considering the cost of those things from the dealer, the failure seems a bit premature to me but, then again, I guess I can't really complain after 5.5 years and 65K miles.
Ended up going with these on Amazon, and they should be in tomorrow:
https://www.amazon.com/gp/product/B016N6YPXW/
They come from Lift Supports Depot just like the other popular ones in this thread, but StrongArm is made in USA as opposed to Turkey. I even called to verify the difference, and Lift Supports Depot really didn't say there was a big advantage of one over the other. I wanted to order via Amazon prime and the cost was pretty much a wash between their house brand and StrongArm, so I simply ordered the USA made ones.