V70III, but which engine at 15tKM per year

Hello, after the purchase of an old V90 failed, I will certainly need a new used everyday car in the near future and my heart always beats for Volvo, I have come to the V70III. I currently drive around 15000km at 10km working distance and pull off from time to time a caravan. My price limit is actually 20t€, better would be 15t€ if you buy such a vehicle without warranty. I have already read the purchase advice, se Your interesting and sea long. My questions are actually, which engine should you prefer? Is the AWD durable? Which year of construction should you avoid? Thank you for your tips! Greeting Andreas