I've got the gearbox, and it's very good, changes are pretty much instant and it's intelligent too, it seems to know what gear you want next, so if you come up to someone trawling at 45 in an NSL, and you slow down, it'll have the next lowest gear ready for you to drop and overtake.
I've been pretty lazy since getting my DSG though and i just drive it in auto all the time, it's good how it changes the gear changes automatically depending on how you are driving, say, if you're taking it easy, it'll only go to 2.5k rpm then change up, but if you put your foot down, it goes upto 6.5K rpm then change, the only downside in auto is if you're driving in 6th at 60, then come upto a slow driver again, you wait behind them until an overtaking space comes up, then you floor it, then it takes about 2 seconds to drop down into 3rd then gives you a good kick in the back and then it shifts.