+10 on the poll. As for the stated question I would choose the 2020 GT500 if it was my money and I could buy one at msrp. It's just in a different league. Don't get me wrong I love the '11-'14's Mustangs and think they are the best looking Mustang this side of a 1st Gen, but I'm S197'd out. I've owned one since I bought my '12 GT and now my '14 GT. If you can swing it buy the 2020, if you can't buy a '11-'12. The '13-'14's are over priced at the moment.