I used the old Roman Breviary before I went to Seminary; the BCP Office (but in Latin and Greek and with the Breviary hymns and Collects and some antiphons) for my first 25 years in Holy Orders; then, after my Silver Jubilee, took up the Liturgy of the Hours: for a change; because it only required lugging one book around; because I wanted to experience the patristic lections. More recently ... but let's not go into that now.
I am not, therefore, an inherently prejudiced person. And I would like to canvas views on the BCP Office, by which I mean the Office starting at O Lord, open ... and ending with the Third Collect. In my opinion ...
Advantages: not too long - you don't find yourself running two hours together for practical reasons; you don't hurry through because there is a lot to say; it is accessible to the Laity; it combines a lot of the important elements of the Western Office tradition in a manageable format; gives the Apostles' Creed twice a day; includes the Athanasian Creed; gives a good diet of Scripture.
Disadvantages: the four lections give it a heavy, didactic, Reformation bias rather different from the emphasis on praise proper to Lauds and Vespers; no patristic lections; no hymns; Evensong combines Vespers and Compline so that it is not really totally suitable either for the traditional hour of Vespers (late afternoon) or that of Compline (bedtime); does not allow for the tradition (thought by many to go back to first century Judaism) of praising God at dawn with the use of the Laudate psalms, 148, 149, 150.
Over to you.