9pin serial against USB is getting interesting if we start talking about Windows 2000 or XP. The quality aspect is not in the interface but in the signal. Reflex depends on ppm signals as generated in your radio. Not any joystick, just ANY signal - a signal as it is generated by a device which is used to control YOUR real helicopter as well. If you need some opinions about the Reflex maybe you have a look over [link=http://runryder.com/helicopter/f21p1/]here[/link]. It's a little more than people just guessing about something they never had in hands. wolfgang