Shoes, and sandals, have to do their real jobs: to protect your feet as well as make you feel comfort and enjoy. Nowadays, shoes and sandals not anymore some pieces of rubbers. Some big company, shoes-makers, do a lot of research for their products.
Great shoes protect your feet, and also make you comfort. Sometimes, help you doing something that you can not do in barefoot.
For daily use or walking you can use sandals or sneakers. Sneakers also can be used for light sports: such as jogging or tennis. But, I highly do not recommend you to use sneakers for heavy sports, such as real football or running.
As a runner, I recommend you to use real running shoes for running. Nike Lunar series shoes such as Nike LunarGlide+, use special material for the shoes, the material that used for astronaut’s shoes when walking on the moon. It’s NASA technology.
Or, you can check the Nike Plus running shoes, that will works with you iPod to measure your runs. Not only the measurement, you also get statistics and online coach from NikePlus.com.