Parkzone F27Q Stryker BNF is buyable for $215 N.I.B. if you keep your eyes open. Step up to 90 mph right out of the box.
Lanier Shrike is a great airframe for speed potential of 120-150 mph
Great Planes Viper ARF as mentioned is a good bang for your buck. 120 mph made easy.
Diamond Dust
Screamin Demon ( as shown with Nelson Q40...187mph in SLF )
And then there is this :
http://www.youtube.com/watch?v=MM3nL4KdEqA
Woweeee! Aside from the "demonic music" in the background the sound of this engine is straight from the "Speed Gods"
SPEEDY