[drob23]

The ZF boxes are also somewhat modular, in that they can be mated with different type of torque converters and in different packages. ZF is working with Chrysler on a ZF9 which is supposed to be on the new grand Cherokee and I think the Ram. ZF is a German automotive supplier that makes all kinds of things, similar to TRW, Continental, Bosch, Borg Warner etc.

One thing that hasn't been pointed out is that DCT's tend to have lower torque/HP ratings. Audi (who are pretty anti manual) use the ZF slushboxes on their top of the line models like S7, S8, RS6, RS7 (I could be wrong on some of those).

Edit - just realized the M5 uses a DCT, so torque limits of Audi S-tronic is probably more that their DCT's aren't as capable as the M-DCT.