Donny VST INS are for DAW recording and sounds are very good not great yet for stage araing are better in live performance I am getting into VST as well just purchased Cubase pro 8 and nektar p6 keybed for my studio looking to put out some real good stuff soon .
Well, that VSTs are not good for live just got changed with the Akai advanced keyboard... It functions just like any hardware synth ( not a workstation or arranger). But for those using 2 keys its the perfect thing to add on top of your arranger or workstation... With SSDs and diskstreaming, loading times of VSTs have almost dissapeared.. On top of that, if you make a setlist for your gig, everything gets preloaded..
VSTs are very much ready for using them live...