[MRM]

The K Cups aren't very good for expresso and aren't all that great of taste even for instant coffee. The best instant expresso machine is Nespresso. It is quite good. A little more expensive than the K cups but a lot better.

For a combination machine that can do both expresso and cappuccino type drinks instantly, the Dolce Gusto line is what you're looking for. They are owned by the same company as Nespresso. You can do expresso with them and they're good for an instant maker, not quite as good as a Nespresso but still good, considering it's an all-in-one machine. The cappuccinos and lattes are very good. I never buy them at the store because they're so expensive, but at about a buck for a mocha latte frappe cappuccino or whatever, they're excellent.

If you're looking for an on-demand unit that can do both, Dolce Gusto is your product. The brand is from Nestlé but the machines are made by Krupps.