I had the original special edition and the two FPS versions. I'll never forget that horrifying sense of urgency you got when the countdown started and you had to make your way to the lift!
AB3D was well designed, if somewhat lacking in the GFX department, but it whizzed along on my 060 equipped machine. Similarly, with the right combinations of settings, AB3DII-TKG was playable and enjoyable.
I never played AB2 or AB2TA but would have liked to. Regrettably I sold my Amiga last year :-( so I couldn't even if I wanted to!
AndyC