VAZ has many uses, not only is it a great analog synth with 100,s of presets it has built in arp/seq with song and pattern modes, it also hosts my fav vsti's & fx. vsti's & fx can be mapped to external midi controllers so setting a control surface is a breeze.
my main use for VAZ is using the standalone version as a vsti/fx host on a 2nd pc, it comes with a 16 channel mixer with dynamic plugin chainer's for stacking up fx for each vsti or vaz synth, it can host 16 vsti's/vaz synths with seperate midi inputs for each.
because it can host vsti's it's easy to overlook the vaz synth itself, I have just finished setting up start up projects with 8 vsti's and a stack of fx so next up will be to get into the vaz synth.