We've used Tassimo but are reluctant to buy the capsules as recycling them is not straightforward. The coffee is consistantly good though.
Now regularly use a French Press (aka cafetiere), we have 2 sizes, the smaller ideal for 1 person. Loathe cleaning them though! I keep the grounds to put around the camellias.
Have recently experienced the Aeropress and would definitely buy this the next time I need a replacement. It's like a long tube and plunger, uses a small filter in the bottom, then the coffee. Ideal for 1 person. To clean you just turn it upside down, coffee grounds and filter drop out, easy to wash remaining parts.