Standard mattress tops are topped with quilted fabric. They are very common because they are typically the least expensive. These mattresses are high quality and long-lasting.
Pillow Top mattresses are a special type of standard mattress, with extra pillow padding stitched onto the sleeping surface. Many of these mattresses have the pillow embedded on both sides which improves quality.
Euro Top mattresses are similar to pillow top mattresses, except that the padding is built right into the mattress structure rather than sown on top.