Your profile shows no experience. Based on that I'd say get a high wing, and learn to control it before you try a fast low wing fighter type scale plane. If you really have no experience, That P51 will last you about 5 seconds[img]i/expressions/face-icon-small-sad.gif[/img]
I'm not one to recommend a specific plane, but advise you to shop, make notes, compare wing-loading (Heavy wing loading means FAST!) Wing loading is the number of ounces per square foot of wing. 8oz. per sq ft is nice.
11 or above starts to get fast. Get something you will enjoy, then look for the challenge of a scale fighter[img]i/expressions/face-icon-small-smile.gif[/img]