I picked up an 04 Td4S 5 door manual, facelift model, 12 months MOT with 70K on the clock for £6K. Take it for a spin to see how it drives and make sure everything works, service history is a bonus though not essential as mine had none. I would steer clear of the 1.8 petrol though, prone to head gasket failure due to small coolant capacity.
All cars have their faults at some time or other so don`t let the tractor drivers put you off.