Yes I've gotten though every single one, thanks largely to project Project Gutenberg, as the library copies seem be on the move more often then not, and that's with two library chains at my disposal.
After a while the characters, though appearing under different names, do get a little repetitive. After all one can only contend with so many old men who are really quite nice under their ogarish exterior and terrifying matriarchs who have been on their death bed for 20 years or more and still manage to make everyone lives miserable day in and day out.
Overall I have to say that which the child Anne was endearing the adult Anne was just too perfect in every way. Small wonder then that as the stories wore on the spotlight shone on other characters more and more.
In the end I'd say that The last book, Rilla of Ingleside was was the best of the books. Still managing to hold humor despite its dark background, and having a somewhat less idealized heroin in Rilla Blythe. I'm not sure the book could stand on its own, as it does presuppose that you already know a bit about many of the characters, but it certainly most intense, of the lot.
The two later additions written to plug gaps in the chronology where however disappointing, mostly as they where completely lacking any central plot or problem but where rather a serious of unrelated events. The first of these, Anne of the Windy Poplars, presented a near goddess like Anne who made everything better by her mere presence. And then we had Anne of Ingleise, a similar sequence of random events, but one in which Anne played almost no roll at all, while being overshadowed by her young children. (I have to admit I didn't finish this one). In any case afterwords the practical Mary Vance, and baby disliking Rilla made a very pleasant change.
PS After a little more reading Jane of Lantern Hill, is by far my favorite Montgomery book. I think I'll stop here as Montgomery's story lines (while quite enjoyable) are a tad on the repetitive side, though I may read more at a later date.