I asked this same question earlier this week (before noticing it's come up various times before). They are correct. Cap One reports on your statement date, mine is the 11th. Just make sure your payment posts on or before the 11th. For May's reporting, Equifax just updated showing a zero balance and my score jumped 20 points!!!! TU and EX has yet to update, I'm hoping they will as I've read they don't like reporting the zero balances.
If they don't, I know to at least keep 1-9% remaining on the statement date.
Thanks for the help!!!!!