Overall, pretty good. Much better than 5, which can't have been difficult. Reasonably easy to dance to.
I read it, as is my tradition, after I got home from the Harry Potter party at the bookstore. Got home about 1:30, read until 5:00, then slept until about 8:30 and finished the last 150 pages. The husband read it on Saturday, and I think he was pleased. I continue to love the Weasleys.
I don't particularly like the character of Harry Potter, who is really just another kid getting by on luck and personal connections like the entitled ones I knew in my youth. But I think he grew up quite a bit in this volume, and as a result I was much more satisfied. I'll be interested to see what the final story brings.
And I particularly liked the shout-out to Rupert Grint, who portrays Ron Weasley in the films. On page 485 one of the characters mistakenly refers to Ron as Rupert. Cute.