It is unfair to condemn a particular type of engine based on experience of a single unit,the 200Tdi is just about the most reliable engine LR ever built with the 300 a close second.The reason I say this is based on years of looking after and repairing them.The P gasket leaking killed too many 300's as did the timing belt running out of line.
Now the problems of both engines,(and complete cures) are well known there is no reason not to have either.All we need now is a decent alternative to Diesel to run them on.
Both engines are very rebuildable,reliable,fuel efficient and give good power,I currently run 2 of them and i'm in no hurry to change.