BlackSamurai,
sure thing.
regular bushes are made outta rubber. Rubbers flex and compress, which are great for NVH and comfort! Absorbs noise, vibration, harshness (N,V,H
but when it comes to handling, it's not so good, cos the flexing makes handling...wobbly.
PU bushes' job is to replace certain rubber bushes and it's harder than rubber. So handling's improved :)