Velocity's A23 is the answer to the problem you did not know you had.  The A23 is essentially a wider Aerohead rim. The idea behind a 23mm wide rim is that when paired with a 23c tire, the internal width of the rim clinches the tire beads just right so that the tire profile is very close to that of a tubular rim.  So you get less rolling resistance, better cornering, and a better ride (you can run your tires at a lower pressure).

700c
430g (on our scale)
Machined Colors: Black
Drillings:  28, 32, 36