I kind of liked the 2006 DSG Tdi Jetta I borrowed but the top gear was pretty short for a turbo diesel. Why it needs to spin well above 2000 rpm at 60mph is a mystery to me, even with the smeared off cams, it had plenty of torque to hold that gear up any of our hills. But it does tow well with that gearing, my buddy towed a 2 wide open snowmobile trailer with it, with no problems and it was working well at 200k miles, so its got that going for it.
Probably in the later years the dsg is geared a bit better for mileage? For me anyways, if the auto doesn't get better mileage with a taller top gear than the manual, I will just get the manual.