With that sort of mileage you'll benefit from the bigger 2.0 TDI: make sure you get the common-rail diesel, not the old unreliable PD engine. As I suggested in the thread asking about a Golf 2.0 TDI, find one with a full service history and neither too many or too few miles. And check when the cambelt is due to be changed.

The hatchback is less desirable than the estate, so you'll get a newer one for your money if you don't mind the looks. At 35,000 a year you'll be inside it most of the time, so what it looks like from outside is less important!