I had a C4S, and I have a TT.
The issue is that I had the standard gearknob on the C4S, but I have the chunky square one on the TT. I also have the shortshift on the TT, and I think for the X50 they make some small mod to the gearbox.
I have also driven 2 regular TTs but it was a year ago.
From memory, if you have both cars with the standard gearlever, I think they feel roughly the same. The TT may be slightly less silky and require a little more force, since the gearbox is a different design, but I don't think it is that different.
Once warm both should shift quite easily.
If you have the shortshift though, then it requires quite lot more force when cold. It is also more notchy. I like the precise feel of it.
Changing gear in general though requires you to be more positive. On the driving instruction I received with the car, they did mention at the start that I should slow down the shifting slightly and try to be positive. Of course, it is more important not to mess it up, since you can damage the thing more easily with the extra power.
It is still possible to make a mistake, and I miss a gear about once every 4000 miles. Most are minor, but I have graunched it once.
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