From my experience it doesn't really matter which one you buy, all rice cookers make good rice, it is really more about you. No matter what, getting a rice cooker will change your life. Sure you might say, I make great rice on my stove top or in my microwave, what do I need another gadget for. If you only make rice once in a while then sure you are right. If you only make rice out of a box with a mix of flavors then you probably don't need it either. However, if you like rice regularly, a rice cooker is a valuable gadget and doesn't even have to cost a lot of money.
Here is a pretty basic rice cooker that only costs $16!!! The Aroma rice cooker even includes a little steamer basket on top so you can have your rice and eat your vegetables too. This cooker even has a stay warm feature perfect for Shabbat night. This one only fits up to 6 cups cooked rice and it doesn't have any special settings for cooking different types of rice. (The larger model is only $24.99)
Here we have the Zojirushi rice cooker. This one has all the bells and whistles and is the king of all rice cookers. Zojirushi has been known for quality products for years, the only catch is the price. This one is $173 on Amazon. It has all the settings so you can get perfect sushi rice versus brown rice, versus sticky rice. There is a timer so you can have perfectly cooked rice, hot and fresh when you get home from work. And it makes up to 10 cups of cooked rice. This is the rice cooker I have, but I don't remember spending quite so much money on it. Still I have to say it is worth it.
If you want a slightly larger rice cooker that is more mid-priced, try this Aroma model. It cooks 16 cups of rice, has a timer and clocks in at $49.95.
Whichever model you choose, I know you will enjoy it. Good quality plain rice comes out steaming hot and fluffy, you won't need anything else, but if you end up with lots of leftover rice like I do getting so excited by how easy it is to make then check out my 4 Easy Meals Using Leftover Rice.