Stainless steel flatware is by far the most popular type due to its ease of maintenance. And today there are so many beautiful and decorative patterns made in stainless that it often is the choice for even the most formal settings.
Many consider stainless steel to be stain-proof which is not the case. Highly acidic foods or sitting in water for extended periods can affect the luster of the steel, so it is always recommended that you wash your flatware not long after use.