You might want to consider something in between. The G7 Fly gives you a great balance between reliability and weight, and the trigger is amazing.
But between the 05 Speed and A1....the 05 Speed is way heavier and they feel bulky to me. The trigger isn't quite as nice IMO but it's probably going to be more reliable than the A1, unless the A1 has the newest fly parts. The 05 speed also gives you the option of using the 90 degree frame.
Myself, I'd rather have the A1, and I'd go for the A1 without giving 05 Speed any consideration.