Looking to purchase used mustang gt

Looking at buying my first mustang! I have thought about getting a new ecoboost (budget is 35k) because I’ve heard so many great things about them! I don’t need the extra power for a daily driver but I would love the full experience if I’m going to spend that much and finally get my dream car. So as I have been looking around at what’s out there I always keep coming back to the (2014-2023automatic)GT’s with low miles (25k or lower) Is there any years I should look out for or try to stick to? What problems will I run into? Maybe problems for certain years?Whats better? 6speed automatic or 10speed automatic? What’s your personal experience owning one? Looking for any and all advice, thank you!