For outer width the edge (?) goes to the HED (right side in the photo below). Neither rim is overly generous with the height or thickness of the braking track.
What about weights? I don't have a scale but of these builds, the SL23 v2 is the lighter:
HED Belgium C2, 24 hole, CX-Ray, 2x, alloy nipples, White Industies T11 hub
Pacenti SL23 v2, 24 hole, CX-Ray, 2x, brass nipples, nipple washers, White Industries T11 hub
