Golf VI Plus with automatic – which motorization?

Hi, after several considerations I decided to get a Golf VI Plus Bj. from 2009 onwards. The diesel affair worries me a bit and therefore it should become a gasoline with automatic, especially since I drive approx. 15,000 km per year at 70% city, 30% country. I am now uncertain with the petrol companies which motorization I should prefer here. It is important to me a good compromise between power and fuel costs. I have read that it is among other things the 1.2 TSI with 77 KW and 1.4 TSI with 90 KW is available. I don’t know which engines are still available with automatic. My question would now be which engine you would recommend and what it looks like with the gearbox in terms of reliability.