Thanks for your support!
It applies to all?
Yes. It's difficult to determine the perfect time for a vote and it depends on the author and the average time of 'when the big ones will hit the target'. To maximize your curation rewards you want the strong whale votes to happen after your own vote.
I usually get the strongest votes after the 15th minute mark, but in most cases there come in a few $3 votes within the 12th minute already. So I think between 12-15 minutes would be a good setting.