I finished Drood a few days ago. While Simmons is an excellent writer overall, and there is much to admire about this novel, I think it fell short of better books.
You have to remember that narrator, Wilkie Collins, is envious, drug addicted, and completely unreliable. Normally, these are elements I'd really enjoy, but for me parts were a little flat. I'd give it three out of five stars.
I also read the DTV and was pinning for my Kindle the whole time.