1.8T (160) v's 2.0 TDI (143)

As i drive the older 2.0 tdi (140) today I cannot comment on the newer CR 2.0 tdi, but I guess it's better than the older one.

The 1.8T (160) is a wonderful engine, very responsive and rev-happy, at least in an A3 cab, that's where I tested it this summer. And, it also had an impressive sound to the exhaust - silent at tickover and at low speeds with a nice lower frequency rumbling, put the foot down and you get a big roar, very nice! The car definitely felt quicker (as it also was anyway) and more responsive than my own 140 tdi, but I also saw that it used much more fuel than my tdi (drove it one whole day in Germany including autobahn) - but if you don't do to many miles a year that is no problem.
I tend to drive over 25000 miles (40000km) a year....

That said I love my 140 tdi, I think it has enough punch in it for my car - but, I'm tempted to buy a petrol engine next time.
Nothing beats a responsive, happy revving petrol turbo engine