The 1979 Book of Common Prayer will always hold a special place in my heart, as it was the first one I ever used. But I have several other versions that I really enjoy, including but not limited to: the 1662 (particularly the International Edition), the 1928, and the 2019 ACNA prayer book. Does anyone else use different editions occasionally?

I sometime use a RC Missal I found at a thrift store, if that counts? I really enjoy it.

I have a RC Missal (1962, I think?), but I've never actually used it for prayer. I love looking through it, though! Mine has English and Latin, so that's cool.

Living in Hawai'i, we use the Hawaiian BCP fairly often (which is a translation of the 1662 BCP done by King Kamehameha IV himself). We have also begun work on translating the 1979 BCP into the Hawaiian language. I also use Common Worship: Times and Seasons fairly often for prayers of the people, etc. (I'm the rector of a parish, so I use these for liturgical planning). As for personal prayer, it's 1979 BCP all the way.