If you want to screw around with VCV, that is; see my thread on my experiences and conclusions regarding it.
As for digital generation raw power in Eurorack, my suggestion would be to wait until Xaoc Devices gets the Odessa on the market, supposedly this summer. Basically, as I noted in this past month's 'KICK ASS!!!' column, this module is more or less akin to having a monophonic iteration of the BellLabs Alles engine (ala Crumar GDS, DK Synergy) in a Eurorack module. You don't need many of these, but in order to get them to really shine, you do need quite a few modulation sources (LFOs, envelopes) to get the elaborate additive spectra moving in all the ways the Odessa allows for.
And as far as filters are concerned, honestly, I think Dave Rossum's Evolution is...ok...but the Morpheus filter would be very suitable with an Odessa or two. Again, modulation sources would be needed, but you can also use some mults/attentuators to split existing ones up to tandem modulation curves to both the oscillator(s) and filter.