inner cv's do play up.
tddi's don't have injector problems as far as i'm aware, pumps do play up though, it's a bosch vp30 pump which a quick serach on the net will proove it's a pretty tempremental bit of kit.
duel mass flywheel, don't think the tddi has this? but the problem with it is it breaks and rattles. do a search as i think the exact problems have been talked about beforem on here.