Trying to think of words I haven't used in a previous review... incredible? Enchanting? You know what, never mind. These books are fun to read, whether you're reading them for the first time, or the seventh time. Don't be daunted by the steadily increasing size; the storyline is interesting, and as a bonus you can look extra nerdy carrying a chunky book around because it won't fit in your already full backpack.
I'll write this as a review for both this book and the overall series- if you enjoy reading fantasy, read them. If you love all things dragon-related, read them. If you have the spare time and attention span required to read this sentence, READ THEM. No pressure though, if you don't want to read them, you don't have to.