Hi
I have a TDI Sport 04. It has more gadgets than the SE models, including the information system on the dash for fuel consumption etc, however the ride is ROCK HARD. Its also the 75HP model, i think its quick enough simply because of the Torque but the Faster 95 hp model will fly along.
Check out the "Article" section on the main Forums page, it has loads of useful stuff
Don't know of many major probs, however check out older threads for consistant gremlins popping up.
Good Luck
Emm