I bought these because they were well priced, and had a color (moss green) that I wanted.  We've had them for about 3 months.  So far they have proved to wear well, and they resist crushing, so you always sit on a cushion...not a flat, hard, compressed thing.
My only criticism, and this is a personal preference, is that the polyester fabric covering lacks a good-feel quality.  I've been used to 100% cotton seat cushions, and in comparison, the poly-cotton blend fabric seems "cheap" feeling to me.  For others where washability and wear/tear is more important, this would be a benefit, but for this gal, I'd prefer the cotton cushion covers.

Pros: Durable, well-priced, variety of colors, loft, sturdy design.
Cons: Preference for cotton, polyester feels cheap and more slippery than I would like.