Image line Morphine is amazing.
It allows easy resynthesis.
Ie pick an interesting percussion sample, load it into Morphine and it will replicate the sample with it`s own controllers. So you now have the same control over the sound as you would with any synth sound.
You can that feck with the sample however you like and make it far more interesting than using samples alone.
Plus you can blend up to 4 synthesised waves making previously impossible variations on the original sample.
It`s very powerful and yet simple to use.