Which is better: prayingqiyaam or reading Qur’aan?

Which is better if one stays up at night: praying or reading Qur'aan?.
Praise be to Allaah.
Praying is better than reading Qur'aan outside of prayer. This was
stated by the imams. The Prophet (peace and blessings of Allaah be
upon him) said: "Adhere to righteousness even though you will not able
to do all acts of virtue. Know that the best of your deeds is prayer
and that no one maintains his wudoo' except a believer." But if a
person feels more focused and ponders and understands better when he
reads Qur'aan outside of prayer, then in his case it is betterto do
that which is more beneficial for him.