Aramith has an extensive line and their top line set has been the Aramith Super Pro and they are made by the Belgian company Tulac. The Centennials marketed by Brunswick are ALSO made by Tulac and are made with the identical resin as the Aramith Super Pro .. they are identical in every way except graphics. Within the past couple of years Aramith introduced a NEW set made with Duramith .. a slightly harder resin than the Aramith Super Pros. They cost slightly more and reportedly don't get dirty as fast. The graphics resemble the Centennials a bit. From all of the research I have done .. if you want QUALITY long lasting balls, that play very well, you only need to focus on these three alternatives .. and basically whichever one looks the best to you. I purchased the Super Pro .. then really just liked the Centennial design better .. and bought a set of those.