BLX Six One Team and Steam 100

The first racquet that I buy is BLX Six One Team in 2013 after many reading from TW. The other option at that time was BLX Steam 100 but the score was lower (76 vs 83) than the 6.1 team and stiffer according to the review. Apparently, now that I know that Andrea Petkovic did not use the 6.1 team 2013 but the previous 18x20 version. Genie Bouchard also did not use the Steam 100, she might have use BLX Pro 95, a 16x20 pattern.