Riedel is perceived to be better because they market their glasses for certain types of wine. Or, at least, they were the first to do this. Many other manufacturers do this today as well. Riedel is one of the largest wine glass manufacturers in the market, and they make some of the best wine glasses you can buy. They’re high-quality at a great price, so you get a great value. They are strong, sturdy, and long lasting, but still offer elegance and sophistication.