VSTs have been years in front of anything (In both flexibility and quality) in an arranger keyboard, however they have always been difficult to set up which puts a lot of users off, (Once setup they are easy to use) with the new NI Controllers and their Komplete Software this has now been solved as everything is done for you, so all you need to do is select the sound and adjust it to how you want with real-time controls. (Unlike an arranger there are no hoops to keep jumping through)

Enjoy

Bill