Best sport sedan for large people?
If you don't take a look at a used Mercedes E-Class Coupe you'll do yourself a disservice. The leg/hip room, seat travel, and general ride comfort are beyond compare in everything you've listed except perhaps the G8. There is literally no better highway road coupe on the market. They are safe, well built, quiet, comfortable, and the insurance cost is, in most cases, lower than other sedans because of their reputation and the types of drivers who buy their cars. Best of all you can say, "Let's take the Benz" and it will make you smile every time.