I downloaded the demo just to play with the features. I ended up being totally blew back to the point I ended up buying the synth the very next day after sound testing it for about an hour.Easy/nice looking interface and easy to navigate. I love the two filters, but what impressed me the most was the arepeggiator. I cross compaired the arp function in viper to the one in dune 2, and viper by far won this battle as the arp is very powerful with many presets and customizable options. The arp unit makes it very easy to come up with a new song concept in seconds at the push of a button It has some very nice factory presets, that do not sound like other synths out their, and I just discovered a whole second bank of patches to use, which means it comes with 256 patches altogether. The matrix functionality is awesome as well, and the effects section is also very powerful with some filter options including a vocoder filter. this hyas easily become my number 1 synth to go along with dune 2 and serum. This synth is a monster. Many people seem to be thrown off by the 32-bit version. Apparently many daws out their make it difficult to use 32-bit programs, but that wasnt an option for me at all, as my 64-bit version of fl is compatible with 32-bit sw without needing any extra plugins. So, for those who choose not to buy it for that reason, only makes me happier, as I know there will be less people out their with the same sound I have. If you like the access virus, then this is a way cheaper option to get the same sound from a brand new synth. This will be one of the top synths of 2018.