Hello Delta:

I've seen the Roulettes fly and the PC9 is quite quick.

In Wikeipedia I looked up the speed of the PC9 and compared to an Extra 300 and the Mustrang P51D

The PC9
http://en.wikipedia.org/wiki/Pilatus_PC-9

Maximum speed: 320kts (576km/h or 360 mph) or 667km/h for PC-9M


The Extra 300
http://en.wikipedia.org/wiki/Extra_300

Never exceed speed: 408 km/h (220 kt)
Cruise speed: 317 km/h (170 kt)

For the sake of completeness as from Wikipedia, P51D Mustang
http://en.wikipedia.org/wiki/P-51_Mustang
Maximum speed: 437 mph (703 km/h) at 25,000 ft (7,620 m)
Cruise speed: 362 mph (580 km/h)

Bye, Ian