Just finished this novel and...wow.
I have never teared up when reading a Star Trek novel BUT, I have to admit, I did so with this one. I could not put the novel down for a second. I found the Noonien Soong part of the book so fascinating and entertaining. It was so fascinating to see how he reacted to Lore's "death" and, eventually, to Data's. His character was explored so deeply and profoundly...just great stuff.
I voted "outstanding." Might even be my favorite Star Trek novel ever, definitely in my top 5.