This is the one we use at work and it works like a breeze :). Very easy to use and you can vary flavors without cleaning the machine, which is as far as I know one of the main cons for automatic machines.
Aeropress (http://www.thinkgeek.com/homeoffice/kitchen/8e3a/) btw is another cheap and handy solution.
http://www.amazon.com/dp/B001NAATK2/ (DeLonghi EN670.B Nespresso Lattissima)
(Edit: If you're not looking for automatic, you can probably scratch this one from your list.)