Snowy, just have to correct you, maybe you were in a hurry.
The SMG in BMW's isn't a "tiptronic", it's an automated clutch manual gearbox. And I think it's appalling.
The term Tiptronic was coined by Porsche in the early 90's for their "sporty" auto gearboxed 911. It was the first vehicle to have the extra little selector slot beside the normal shift.
Over the years, seems most people have somehow started calling all gear selectors with the Porsche style +/- shifters Tiptronic.
I love "DSG's", IF they're in the right car. And I think we shouldn't be calling them DSG, as thats just Volkswagen's term for it. How about we call them dual clutch transmissions (DCT)?
IMO, while a DCT is great for a sports car, it's not ideal for a larger luxurious style car or tight driving situations, where a more conventional automatic 'box is much better. See what can be done with the ZF auto for instance, given the right programming and actual locking torque convertor, it can be smooth as silk, while still blipping the throttle when a manual downshift has been asked of it. A DCT on the other hand can sometimes be caught nappuing between gears, especially in auto mode. Yes, even VW's, which is seen as one of the best.
I think within 10 years, there'll be only two gearboxes offered. A smart traditional automatic box with high tech convertor lockup for great economy and smoothness, and DCT for more sporting cars.