Guo Zhengxin (CHN) is the first skater to land two quads in a single performance (free skate) at the 1997 World Championships: a quad toe, plus a quad toe-double toe combination, thus also making him the first to land a single quad and a quad in combination together in one performance. The following year, he became the first skater to land a quadruple toeloop-double toeloop combination at the Olympic Games (1998, Nagano). Who do you think has the best quad today? Discuss!