I LOVE Nars' loose powder. I think it's one of those products out in the market that doesn't get nearly enough hype.
It sets makeup beautifully, and it never looks cakey. Your makeup just looks very glowy. And, like everyone else has said, you get an enormous amount of powder (had mine for a few years and it looks completely full still). I'm also not bothered by the packaging, but I don't ever travel with mine - it just sits on my vanity.