none to the filter 92, which is my biggest complaint about T2. it was way better in Traktor 1.2.7. i sent NI a comparison and they have admitted that it is a bug that they may fix in future updates. for now filter 92 is unusable in my eyes.
on the other hand, the regular filter in the FX units sounds better and the slope isn't as steep when turning down the low filter, which gives you a bit more control.