Well, ya stumped me again. :’) I’ve never read any of those.
You are missing out on something really good. Not as good as Tolkein (as if anything could be, outside of Scriptures) but nevertheless, an awesomely good read. Especially if you start from the first book and read through to the last.
Each is like the teenaged boy who is the main character...more complex and full of angst as he ages. I would personally recommend them all to you. I suspect you won’t be disappointed. Check them out from the library or get them on Kindle, but read from the first to the last.
When you have read them all (7) let me know what you think.
England is full of magical potential. ;o]