Randomness is sometimes underrated by people in just coming into the world of synthesis, but it is extremely important to make stuff interesting it really adds a little spice to synthesis...
Sapel is a dual tamed random source from Frap Tools.
More info at Frap Tools
4-voice paraphonic synth,2 osc, 3 filters,5 LFO, 5 ENV + 12 slot matrix
High resolution instrument capable of some pretty lovely sounds