Yeah, if you've not got a Virus go get one straight off. it's a very upfront sounding synth, bit rough compared to the supernova and the basses can be a bit muddy but f*** me it changed my world when I got one.

We've just got the supernova out of retirement for the bottom end of a tune, also sounding pretty fantastic but I'd have the Virus over the Nova any day, but you'll need something other than the Virus for bottom end really I think, although there are things you can do with the Virus to make it a bit better it still always sounds a bit wooly down there (patches to prove me wrong gratefully received).

Reaktor can be made to sound almost exactly like the Nova at the bottom end but I find its timing a bit poor, but I think that could be as much down to Protool's dodgy midi implementation as Reaktor so you might be fine with Cubase/Logic, check it out. Actually all the Native Instruments analog emulation stuff sounds a bit like the Nova at the bottom end, Pro-52/3 sounds very similar although a pain in the butt to use with it's stupid knobby interface, cute but annoying.

Really like some of the soft synths that come with Logic Audio as well, really gloopy analoguesque sounds from some of those ... yummy ...