Saw all their speeches on the cna website :
Dr Koh : No substance. Just keep repeating that he will 'pia' for PE in different languages. The way he purposely uses hokkien malay tamil english and chinese etc shows that he is even more fake than first thought. Maybe he is trying to waste time as he doesn't seemed prepared. Boring speech.
KJ : Most substances in his speech among all but then he is reading from his note. At least his speech is comprehensible unlike his past speeches. An improvement. His slang is still distracting but his speech is quite listenable.
DL : Most nervous among all despite reading from his notes. He has got nothing much to say except like he knows the place and will work hard. He seemed overawe by the crowd and if he is in parliament, I wonder how he can control not to pee. DL seemed to rush and mumbled and fumbled all at the same time.
LLL : Clear and concise speech delivered in both English and Mandarin. Speaks with gusto and without notes.