I've come to like off-center/asymmetric rear rims.
Velocity makes the A23 (and used to make the aerohead) in Off-Center (OC).
DT makes a couple of asymmetric rims.
I don't know if you can do 8/9/10 speed with the 126mm and 126mm spacing.
Tolerances will be tight, but you can do 126mm with the 8/9/10 and asymmetric.