I am blessed with a very good library of Orthodox texts, especially liturgical texts. The only thing I don’t have are the Holy Transfiguration editions with the Byzantine Chant strophes /// as I find these are harder to read, so my Pentecostarion is the St. John of Kronstadt Press edition, and I do not have the monthly menaion, but I do have the Festal Menaion by Metropolitan Kallistos Ware, memory eternal, and Mother Mary*, and the “Nasser Five Pounder” by the blessed Antiochian priest Fr. Seraphim Nasser, memory eternal, who I hope might along with Metropolitan Anthony Bashir be evaluated for glorification for the work they did in compiling and approving that work, and also the liturgical text by Archbishop Fan Noli, who I think might also be a saint for his work in saving Albanian Orthodoxy during the spectacularly brutal Hoxhaist dictatorship while translating the liturgical texts, and between those two items the Canons from Matins and other liturgical propers for most feasts should be covered according to my friend Fr. John Whiteford. I also have the slightly awkward but extremely useful translation of the Holy Week services published by GoArch (which in content corresponds to a similar Coptic book called the Paschalion, but my understanding is that word more properly refers to what in Latin is called the Computus, that is, the formula adopted at the Council of Nicaea for determining the date of Pascha.
There is also a lot of exotic material, so for instance my Unabbreviated Horologion is supplemented by the Horologion from the Church of the Nativity in Erie, PA, and I also have their prayerbook and a Sluzhbenik, in addition to a Sluzhbenik from St. Tikhon’s and the unusual Sluzhbenik used by New Skete Monastery (which unfortunately has no videos of their services online), which is a remarkably beautifully printed volume, in terms of the elegance of the book itself it might by the crown jewel of my collection. It also has a version of the Divine Liturgy of St. James. Which takes us to the crown jewel of my collection, the newly printed Sluzhbenik in English and Church Slavonic by Holy Trinity Jordanville (who also prints my main Horologion and A Psalter for Prayer) of the Divine Liturgy of St. James and the Presanctified Liturgy of St. James, which is exquisite. These are also based on the best manuscripts and constitute a critical text which is devoid of what might be called controversial aspects which characterize some editions of the Divine Liturgy of St. James.
*Also my Triodion and the Supplement to my Triodion is from Metropolitan Kallistos Ware.