Diesel or gasoline? And above all what brand? SEAT OPEL FORD OR SKODA?

Hello forum, I would like to buy a new car. To my profile: I am a frequent driver (35,000km per year), would like to have a station wagon that should pull a trailer/horse hanger at least (1400 Kg trailer load) and stand in front of the Dielemma which car I should buy. I have in mind: Skoda Octavia Opel Astra Frod Focus Seat Leon (GOLF 7) Now I would like to have tips. Would you like to have between 120 and 150 hp. Rather diesel or gasoline? Which car offers the best Future opportunities? (long-lasting) Is it worth inventing into an all-wheel drive? Better to set on 2 liters of engines than on 1.6s? Which brand is the best? Hope you can help me!! LG MK