Hola!
Basically, I thought I'd written and published this post eons ago, but apparently I haven't!  I suppose that's what can happen with products that are used every day!  So let's start by saying I use this products almost every day, and I happen to think that it is the best Loose Powder I have ever come across, and I've tried quite a few!
The Nars Loose Powder is just a beautiful, quality, well-made product.  The powder is super finely milled, and really works to perfect the look of the face.  The container has within it a ridiculous amount of powder, as in I don't think I'll have to buy a new one for a good couple of years!  The actual design of the pot is a little weird, I find that the sifter inside can often fall out, and that when you close the container, powder forces its way out of the pot, but this doesn't detract from the brilliance of this powder.
So what are my final thoughts on the Nars Loose Powder?  Well, I haven't even looked at another loose powder in the 4 or 5 months that I've had this.  That's got to say something in itself!
Love A.x