I've done 2 books with Blub and I'm quite happy with the quality of both. For both, I used LR4's built-in module rather than Blurb's old Booksmart. It seems that Blub has just upgraded their own software with the release of the new BookWright application. I haven't looked at that yet nor have I upgraded to LR5 which has some improvements to its book creation module.I used them for a few projects about 5 or 6 years ago. I liked it overall though the Booksmart software was pretty clunky. It may be better now. I am interested in trying out the Lightroom photobook creator that integrates/uploads straight to Blurb.