The Surefire lights that use the TIR optic have fairly similar beams, though the spot will be fuller and more well-defined rather than uneven and squarish, and the brighter versions like the E2DL will have comparatively stronger spill.
I noticed the same thing with the lower output Malkoffs, as I did with the stock SF L1 and E2L. The higher output versions seem to make better use of the optic, and give a more pleasing beam overall, while the lower output ones are more spot-oriented in my experience-which it sounds like you prefer.
I'd forgotten about those Arcs with the Fraen, as all three of mine had the NX05.