Reaktor is cool if your into expirimenting but if your looking for decent analog related sounds stay away,
The oscilators and filters sound very thin and plastic like which might be cool for digital sounds,soundscapes,fx and so but not if your looking to emulate a 70s beast
The Gmedia stuff are awesome, Oddity is one of my favorite synths and the minimonsta is my go-to synth for bass.
Arturia's moog modular is really out of this world, it sounds fantastic.