BV Signet Collection 2005 Cabernet Sauvignon

I'm a little confused about BV. I've had some of their wines during wine night, and they've been barfalicious, but someone brought this bottle to our house on some occasion and Jenny and I opened it and were pleasantly surprised. Is it because of the "Signet Collection" part? Anyway, this was a fine "jammy", as Jenny called it, cab, which also kept well refrigerated for a week after being opened. I haven't been trying many wines lately...