If you want to update your bathroom to a more efficient or more modern layout, you might want to consider a couple of different models. One good option is to go with an Energy Efficient Toilet, which uses less water and less energy to function. The other option is to go with an all-in-one bathtub with a built-in shower head and curtain and is connected to a hot water supply. However, before you make your final decision, there are a few other things to think about.