Toyota Innova Crysta - Petrol or Diesel

Hi
I am a resident of Delhi. Looking to buy premium 7 seater Innova Crysta. Very much confused about the variant. Should i go for Petrol Automatic or Diesel Automatic ? Positive about Petrol : Resale easy/difficult after 6-7 years ? Positive about Diesel : Same Resale issue due to 10 Yr registration limit ? what should i do ??