I pray the Roman Rite Office according to the Ordinary Form.
For English, I use “The Divine Office” published in the UK in 3 volumes, since I live in a region where those books are approved for public liturgical use. As the volumes are bulky, and I try to pray a middle hour in the course of my work, I also have a small booklet “Prayer During the Day” published by Catholic Truth Society handy in my briefcase.
For Latin, I use “Liturgia Horarum” published by the Vatican in 4 volumes. (Interestingly, Midwest Theological Forum also published the Liturgia Horarum, but in 6 volumes recently.)
Sometimes I pray in Chinese as well. I use the one volume equivalent of Christian Prayer “每日礼赞” published by the Chinese Bishops’ Conference in Taiwan (in traditional Chinese characters) or published by Hebei Faith Press in PRC (in simplified Chinese characters).
For special Dominican saints, I make use of the “Proprium Ordinis Praedicatorum” to supplement the texts of the Liturgia Horarum. This is published by the Order of Preachers in Santa Sabina.