I whole-heartily agree,having a module to store you computer software patches gives you infinite possibilities & will completely eradicate your problem.
The Muse Receptors are very pricey(around $1,500 to $2,000 I believe),but I really think it would be worth selling your Korg M50 if you needed to and just use you Kurzweil as a midi controller and go hog-wild!
-Elwood