the 150 is fine never had any serious problems with mine all down to how it is looked after, plus a remap takes you into the 190 bhp's 
what mileage is yours on kerrse? i know, my dad had a bora 150tdi when they 1st came out revo'd to nearly 190 - was nuts! should be viewing a golf 150 saturday but feel slightly dubious about them still i dunno why, my gut says 130 my head says 150! lol. Has anyone got any other experiences to share? good or bad? mite sway which way i go. ive heard or read some where in one of the links above something about dodgy cams in 150's. is down to people using non pd oil???
My car is on 110,000 miles now when i bought it 5-6 years ago it had 46,000 one owner. I personally have not had any cam problems and mine is a 52 plate. I had mine remapped at 86k still on the original clutch too.
I have had the odd problem but only things like wiper linkage, wiper motor, window regulator all the usual mk 4 issue's lol
I think the 150 is a great car if you look after it i service mine every 10k and replace anything that needs replacing straight away with geniune parts. I also always use Castrol Edge Turbo Diesel 5W-40 which is expensive but i would say has helped prevent cam issues.