A guy at work had a mk6, i went in it and it was noisey I found Most 2nd models seemed to be really basic too, so the mk5 will give more features. Don't think will be getting a mk4, as for the money my mum wants to spend we can get a nice low milage mk5 with good spec.
iv seen a really nice polo 9n 1.4tdi 52 reg2003 neally got but the gti came up its at chartoak motors wimslow jazz blue 40k 3995 the 9n is safer tan 6n2 and feels solid
