Well, I really liked the last. For sure, the band changed the style a bit, with a proggier edge, and also they sounded a bit... rusted, maybe.
Anyway, my fave is Juggling 9 (really wonderful!), followed by Blueprint. After them, Tug of War and Blink of an Eye. I think the last and Xen are a bit lower than Tug and Blink. My last faves are from Wounded (weird opinion I know) to Break and still I think they are good albums.