I'm using the Minna series and actually prefer it better over the JFBP series. Mainly it's because everything is in Japanese, and they have more dialogs than the JFBP series.
As for it being outdated, I usually look the words up in my dictionary, and make notes in my book.
I'm thinking about skipping the 3rd Minna book and just getting the Intermediate book everyone keeps recommending. The 3rd book has the same format which makes me wonder why they didn't update it to look more modern.
My Korean classmates have a Korean version of Minna that looks way better than what I'm using. I wonder why anyone else can't redesign the Minna series?