I always loved the 308, and when I finally was able to buy one... I bought a 348 instead, and that is my advice to you as well.
=> more space to sit, more comfortable driving position
=> modern bosch electronics
=> modern low profile tires for better driving performance and safety
=> uses 95octane no lead gas
I would suggest you drive both. Though the 348 might cost a bit more, there is a good chance that you spend less on it afterwards to keep it running.