i have a moser 9". The only thing i dont like is that the torque arm bracket for the rear will hit the floor is the car is lowered, and make a hole
.
I spent a little more money and got the moser aluminum center section as well to save a few pounds.
Other than that its a sweet setup.
the 12 bolts are probably the most economical, and like said above the s60 is a bit overkill and pretty heavy as well.
The moser 12bolt uses 4 small bolts to hold the torque arm to the rear, which tend to come loose and damage the rear and torque arm, while the strange 12 bolt uses the factory style through bolts. If you go 12 bolt i would go with the strange rear.