I'd have to say the BM705 Mini AxisLock. It is as fast, or possibly faster than my BM2500 MiniReflex. The BM710 is definitely a fast opener, but it's smaller brother smokes it.
When it gets down to it, I think most of the modern tactical folders, auto's and manuals, are all quite fast and I doubt the differences would be noticeable in most real situations. Besides, without a machine to test opening speed, it's all subjective.
Ray
------------------
Knowledge without understanding is knowledge wasted.
Understanding without knowledge is a rare gift - but not an impossibility.
For the impossible is always possible through faith. - Bathroom graffiti, gas station, Grey, TN, Dec, 1988
AKTI Member #A000831