I got Keurig coffee maker for Christmas and have enjoyed examining the inside of the K cups after the coffee is brewed. One thing I've discovered is that many coffees in these are actually instant.
I LOVE French Vanilla Cappuccino and found that the Grove Square K cups work perfectly for campouts... Open the top of the cup, pour the instant coffee into a mug, then poor hot water on it. Stir and drink... these K cups don't weigh much at all, but they are bulkier than, say, Starbucks VIA coffee packets. It's a sacrifice I'm willing to make for something I enjoy.