Different milling and LCD instead of LED, thats it i think between the 06 speed and G7 fly.
The 05 speed is based on the 04 fly platform where as the G7 fly and 06 speed are very similar and not to be confused with the old stock G7.
A1
G7 Fly
06 speed
G7
05 speed
A4 fly.
(not including PL's)
Um, yeah, correct, the 06 has LED display and runs on a PP3 9V battery and basically has less modes, whereas the G7 Fly has an LCD display, almost useless IR ports, its own rechargable battery (thatl lasts forever between charges) and is easier to change settings on, especially if your colourblind!
However, both have the same 'new' angel barrel thead, optoswitch, magnetic triger and totally rip when setup well. For UK tourney use the difference is down to price, cosmetics and preference!