I like them.
I've been using their 18-month pocket diaries for years now, I find the blank page useful to make additional notes without having to write tiny/illegibly. I get a new one mid-year, doesn't matter when because the old one I'm using runs to the end of the year, and when I get to the end of the year, I'm definitely using the new one by then so that I can be noting appointments in January onwards.