Z3ta's cool, its pretty easy except for the modulation section, but then I havent really tried to use that.
It has 6 oscillators which is why I like it.
As for doing this in Reason, use a subtractor with 2 sawtooth waves at 3 octaves, a notch or bandpass filter with the cutoff assinged to an lfo, send the output to a Unison, then a Delay (set to 3 steps or so) and a Chorus unit (just experiment). Thats a start anyway, just play with that, or flick through some presets and remember whcih bits you liked and recreate them.