I have been using vArranger for nearly 10 years. I have spent a lot of time the past 8 weeks using vArranger without a Ketron Sound Module and using Dan's synth. It works really well. I have also auditioned nearly 4000 style from various keyboards using the synth and have eliminated about 2/3 of them. The remaining ones play ok - some will need tweaking. My goal is to cut the number down to about 100 of the best sounding styles of various genres and go with that.
On another note - Dan's level of support for vArranger owners is without question at the top of the list. I have sent him emails late at night and he will answer - even though it is 3:00-5:00 in the morning in Paris. Also, if you post on the forum you get an answer almost immediately.
Oh yea, I use a Roland A-800 Pro 61 key controller with vArranger. With Dan's built-in controller options I have the Roland controls setup exactly like you would have on a normal arranger keyboard.
Deane