Just finished Unity by S.D. Perry - so good! I was very pleased with how the storylines of the DS9 novels came together. I'm happily zipping through the "World of Ds9" books. They're easy reads. My plan is to read Warpath and then decide if I want to read the others. I've never been crazy about the Kira/Iliana Ghemor thing.
While I assumed I'd hop over and begin reading the Titan series, I may read the Terok Nor trilogy first. It sounds good and I can't get enough of those Cardassians!