The American ideal is NOT just that you have a Representative, but that Representative knows YOUR community.
Proportional representation could result in all my States Representatives coming from LA or SF, but not the rural areas.
Ideally, I'd like Representatives that I'd have realistically met before in normal day to day living in the community. We need it representative for every 25,000 people, in my opinion. and that representative coming from my local community of 25,000 or so people.