I am conflicted. Two nights ago I burned my stovetop rice and made a mess of the pot. (Though the unburned part was great!) I ordered the Zojirushi model paulrapheal linked, canceled my order (twice), and now have the unit in my amazon shopping cart. I am torn between the 1L and 1.8L size. I've dithered, and now have missed the amazon shipping cutoff for tonight.
From the Zoijirushi manual the 1L size can make as little as 1 Japanese rice cup at a time of (uncooked) brown rice or 1/2 cup of white, while the 1.8L size can make as little as 2 cups of brown, which is an awful lot of brown rice for one person. On the other hand the 1.8L would be a lot less likely to boil over, I should think. For this reason I am leaning towards the 1.8L as the cost increase is minimal, and the weight is only slightly more.
I mentioned rice cookers to a friend this afternoon, expecting her to talk me out of it. She told me she's had three: "Once you've used a rice cooker you never go back."
I've successfully cooked many delightful things in pressure cookers...rice is not among them.