Live Younger Now!

Should we buy the least expensive vitamins, herbals, other supplements or should we look for nutritional products that are validated by solid science and not marketing science.  I choose to go for solid science.  I am going to pay more for a premium product but I am going to get better results.  Just because the product is on the shelf does not mean that it has been formulated based on solid science.  We need to do the research.  What do you think?