Hi Bernie9
I know that you are intervening on the English forum of vArranger.
The difficulty with the sound engines is that none can respond to the programs change in General Midi 2 , according to the number map of each manufacturer.
That's why Dan developed a home system that recognizes the origin of styles by brand.
I built a bank for Ketron styles but qualitatively it's a little less than SD2. You cannot emulate organ flutes with sound font for example.
Apart from this restriction and certain restrictions in the effects , this bank can replace an SD2 even under so-called professional working conditions.
Of course, those who use VSTs and VSTi can significantly improve the sound result but at the cost of a job that requires a minimum of know-how.
If you have questions sometimes never hesitate to ask whether it is here or on the forum of vA. I am always listening.