Living with 3.91's
Personally I like my 323's and relatively short 15" tires. But, I dont race, just cruise around and I like driving on the highway. I had a car with 3.91's and a 4 speed years ago and it was fun, but the highway drove me nuts, too many Rpms and too much engine drone. Its mainly a matter of preference and what you intend to do with the car.