Wow, there is some hate going on around here for my favorite series.
I think the series has had a lot of nice variety so far. The first book was a political / action adventure and the necessary follow-up to Nemesis. The Red King (which I'll grant is probably the weakest of the bunch, but IMHO not bad at all) is a follow-up to The Sundered, and (as I saw it) thematically foreshadowed their ultimate mission of exploration. Orion's Hounds, my favorite of the bunch, worked on a lot of levels: the incredible worldbuilding done by Christopher regarding the races and cosmozoans (sic?), its scope, and- being Titan's first exploratory mission- the thematic links back to the first TNG episode, "Encounter at Farpoint."
I recently finished re-reading Sword of Damocles, and having enjoyed it the first time around, I enjoyed it even more the second time. I'm a sucker for time travel / paradox stories, and I was happy to see one this early in the Titan series. The Orishan society, and the concept of the Eye, were just fascinating. Lots of emotional impact (the Riker / Troi tension; Vale, Troi, and company finding the wreckage; the scene with Riker and the Orishan from the ship and its last words; the flashbacks to Jaza's life; and that ending...).
Yep, love this series, and can't wait for Destiny to arrive to read more of Titan's adventures.

I recently finished re-reading Sword of Damocles, and having enjoyed it the first time around, I enjoyed it even more the second time. I'm a sucker for time travel / paradox stories, and I was happy to see one this early in the Titan series. The Orishan society, and the concept of the Eye, were just fascinating. Lots of emotional impact (the Riker / Troi tension; Vale, Troi, and company finding the wreckage; the scene with Riker and the Orishan from the ship and its last words; the flashbacks to Jaza's life; and that ending...).
Yep, love this series, and can't wait for Destiny to arrive to read more of Titan's adventures.