SUV purchase advice

Hello Motor Talkler I’m new here and I need a decision-making aid. And I want to buy a new car next month. I decided to take an SUV because I need the space for me and my family. I’m already the Seat Tarraco 2.0 TDI and TSI and the DS7 Crossback. I like both vehicles very much but I just can’t decide. Currently I drive a 15 year old Opel Signum 2.2 DirectX and since the now More and more coal has to eat something new. At the Tarraco I like that you get the full equipment for just under 50,000, the trunk is very large. Unfortunately the consumption in the VW Group is relatively high what storts me. The DS 7 Crossback looks very futuristic. What bothers me is the return camera. The resolution is not the best and the hat rack I find also not really great. Then I also do not know if I should take a petrol or diesel. I drive about 10 to 15,000 km a year. What I like about the DS7 is the EAT8 transmission. What’s better? An automatic converter or the DSG transmission. Since I live in Berlin it is very difficult to find the right SUV. Luckily, I am moving very much on the outskirts of the city and in the surrounding countryside on rural roads and highways. For your help I thank you already and look forward to your answers. Greeting Payns84