I just want to point out a couple things you missed.
Originally posted by TheBroz
LCD: Same sort of thing as the LED but this time with a screen in the grip and a few minor mechanical alterations.
LCD had some pretty radical changes from the LED, longer bolt, lower pressure, redesigned solenoid, ligher, shorter, smaller body, LCD screen, and a much faster board.
IR3: Changed grip frame to 90 degree 'space' frame with cutlass style hand guard. Featured the 'COPS' ball detection system, gated feed port and enclosed circuit board (no mess of wires as before)
The enclosed circuit board was mostly to prevent cheating and unofficial board re-programming, there's no fewer wires, the board is just encased in a plastic shell. You also forgot the newer, smaller, lower pressure solenoid and shorter, lighter ram and body.
LCD03: A reduced price angel to get rid of some spare parts WDP had knocking around.
You're basically right on that, but in all fairness, it did feature the new IR3 solenoid.
Speed: Fairly major revision to the Angel internals for the first time. Retaining the IR3s 90 degree frame (but not the hand guard) it no longer featured a LCD in the side of the grip but a LED based display and simplified set-up. Also featured a revised 'intelligent' COPS system that was renamed 'sensi' to try and distance itself from the bad press that the IR3s ball detection system had gained from muppets not knowing how to set it up.
Yep, pretty much. The speed did offer some pretty big changes in internals, but it wasn't the first "major" revision to the Angel, every version has offered quite a bit of advantage over the other (the smallest change occuring between the LCD and IR3).
A4: Basically the same internal platform as the speed but with return of the LCD screen and IR functionality.
New LPR, faster board, new solenoid, lower pressure than the Speed engine, shorter, lighter body, redesigned grip frame, vernier wheels, and redesigned bolt were also added features.
Speed 05: Big changes are afoot.
Not so much, it's not much of a radical change from the earlier Speeds/A4/Fly's, but a cheaper and simpler alternative than the Fly.
That's about it, everything else is pretty much right on.