I'm a fan of the following Jiajis:

Xiong Guo Wei

Lu Guo Long

Zhu Yong Ji

Hu Hai Yu

Lv Rui Zhan

Wu Yu Bin

Wang Wei Qing

Yao Jie Fang

Yang Gao Zheng

Yang Ping De

Qiu Guan Jie

Guo Jia Ming

Ni Fu Liang

Liu Yu Xing

Liang Yong Xin

Su Cheng Fu

Shen Rong Chun

Lin Jin Xin

Wang Ying Zai

Huang Rong Yue, etc

Just to name a few :)

Experienced strong yijis -

Lee Guo Hua, Liang Wen Jie, Liang Zhi Shun, Liang Hua Ping

New generation of up coming strong yijis -

Liu Yi Hao, Lin Chao Xian, Xu Yong Kun, Huang Ji Xian, Yao Wee Hoe, Chen Mao Ran, Fan Yong Kang

Just to name a few :)

A pity that he is unlikely to take part :(

Each and every one of the masters are strong in their own right as they have become Singapore Champion in their prime at one point or another. Mo Wen Yao, Lin Yao Shen, Kang De Rong, Xu Xin, Zheng Xiang Fu are all very strong. But as of now in my humble opinion I think the strongest three are Wu Zhong Han, Huang Jun Ming and Lai Han Soon.