Give me a slush every time. The main load bearing component tnis fluid, so keep on top of periodic changes and you're laughing. No clutch (or even worse, dual cutch) no DMF, no effort, bliss.
The downside is, of course, the it takes a car with a fair bit of torque over a wide spread to make them work properly.
I own all my cars - no renting on PCP or other such rubbish for me - so steer clear of MMT type boxes for the reasons the wise Rogerzilla states. As a consequence of all the above I'm stuck with a hateful manual box (the box is fine, I just hate manuals) on the 2008 dog van. I meant whatever next, valve radios in the dashboard, hand crank starting handles?