Ive had 4 Warthogs (due to the first 3 being faulty in some way) ranging from serial number 2,000 to my current 7,700. And there have been some minor differences with the switches but nothing major as far as I can tell.
Intel 2500k @ 4.5Ghz
Corsair XMS3 8Gb @ 1600Mhz
Nvidia GTX480 @ 900Mhz
Samsung F3 1Tb x 2 RAID0
Thrustmaster Warthog | Saitek Combat Rudder Pedals