Favorite gear ratio for street car

When I bought my 73 Dart 340 Sport four speed new in 73, I had a 3.91 Sure Grip. The noise drove me crazy on the interstate, and I was a young guy then. Now, I've just finished building another 73 Sport with a better 340, 3.91 gears, but this time a 200-4R OD trans. I'm much older and don't want that noise anymore. Just my 2 cents.