This is the perfect size for our family of two. If you eat fresh veggies on a daily basis you will love the size of steamer. Rice turns out perfect. I place a dish towel underneath to catch any steam residue but don't find it to be an issue.
I got the NHS-10 model and it's the perfect size. I can make just one cup at a time (their cup measurement, which is equivalent to ~2/3 US measuring cups) or up to 6, and the rice comes out perfect without practically any work.