In Germany, Enid Blyton is HUGE, and they continued some of her series with German writers. I always loved Malory Towers, the Adventure series, and some of her stand-alone books about families - Five Bad Boys, Those Dreadful Children and the Mistletoe books. I still re-read my old Enid Blytons, there is nothing better for those escapist evenings... ;-)
She was also a great nature writer. Her books about animals, insects and plants are wonderful. She was an interesting, complex woman, and I also read her biography and saw the mini series with Helena Bonham Carter.
Her books may be formulaic and full of prejudice against anyone not belonging to the "core group" but they turned many children into life-long readers.
I totally agree about the stand-alone books as "The six cousins at Mistletoe farm" is my very favourite Enid Blyton book and I actually still read it from time to time. Her books bring me back to the simpler days of my childhood when I first read them. Although there are no televisions, computer games or mobile phones in them my son also enjoyed them when he was younger. Enid Blyton was a very complex person and I think that for her, writing the books and "inventing" an ideal world was a means of escaping from the more unpleasant realities of life. By coincidence, 28th. November marked the 50th. anniversary of her death.
Cheers,
GREENOWL