Of course any company is going to recommend something from their own company (Luxilon is owned by Wilson), so it means nothing that Wilson recommends the 15g Lux 4G string to me. The reason they came out with this 15g string was to deal with all the string breaking that they anticipated occuring with the 99S and to capitalize on it as well. It's smart business. Super thick poly strings are not appealing to me. I have moved on from the Steam 99s and have zero desire to revisit it. I have come to realize racquets designed for all court play fit my game much better than baseline sticks like the 99s or APD. I also don't rely on heavy topspin for my game. I play lots of S&V, droppers, short angled touch shots, drop volleys, lobs, forhand & backhand slice and need a more well rounded racquet.