None of them stand because all of them are taken out of context which has been clarified by many including Zakir Naik in his lectures. I mean all means all.
yeah I already tried googling his name, but I couldn't find any sites where he specifically rebuts the contradictions in the Quran; even googling "zakir naik quran contradictions" only finds sites where he's pointing out (easily answered) contradictions in the Bible.
You have to see all his 24 videos to see all the contradictions clarified. I have the set of all bought locally.
It'll depend on what faith you adhere to; if Muslim, the Koran will be perfect and everything else full of contradictions; if Christian ditto for the Bible, if Atheist then ditto for Darwin and so on.
Zakir Naik is student of comparative religion and is ready to accept any faith as open challenge which can prove that they have no contradiction.