I had one, thought it was okay. Then we got a softer bed and that pillow hurt my neck. It was fine with the firmer mattress but if you sink into a soft mattress you'll need a flatter pillow. YMMV of course.
It's ok. It was amazing when brand new. You have to throw it in the dryer every once in a while to firm it back up, and I never think of doing that. I probably should when I get up on a weekend morning because my pillow us uncomftable, but I don't. I'm guessing for the money there is something better out there. Won't be buying again.
I'm a big fan of my Casper pillow. A lot of reviews say it's not firm or supportive enough, but it's good enough for me when sleeping on my back and awesomely comfortable when on my side.
I had a contoured memory foam pillow before and was looking to switch to a down pillow when I decided to try the Casper. It still flattens a bit overnight, but not as much as down pillows I've tried - just needs a quick fluffing now and then.. I'm still happy with it over a year later.