I'm thinking about changing the front seats on my 3 door A3. They're in decent condition but I think I'd like something a little more comfortable. I've got the SE model so they're pretty basic, plus they're grey. I passed an older A4 yesterday and the leather seats looked great, almost armchair like. Is there a spec I should be looking for? I test drove a sport and SLine and both were very comfy but is there another spec level or 3 door model I should also be looking at?