Reginald Mitchells Spitfire was one of the soundest designs of the war. Its only real handicap was lack of range due to the fact it was intended as a point defence weapon. This limited the Spitfires effectiveness later in the war when much of the aerial combat took place deep inside occupied Europe. Otherwise an amazing aircraft, still in production after the end of WW II. On the handling of the P-51, pilots needed to be very carefull when flying with full tanks as the 90 gallon tank behind the pilot upset the center of gravity when full. Pilots first drained it to 45 gallons before shifting to the drop tanks to regain proper center of gravity. This would have caused problems for the Mustang when used in the intercepter role. I'm more into WWI airplanes but here's my 2 cents. Once again as with tanks I just lovethe look of the P-38, though wasn't it hard to fly? As to best fighter well I'll rely here on what I've watched and read by pilots of th period before during and since. "In the air, speed is everything." By that rule wasn't the P-51 the fastest prop plane of the war?