Soundcanvas modules have GM and GS Patch banks...therefore can be easily used with
those types of midi files, without the need for remapping the patches.
I have heard people say that soundcanvas patches don't sound as good as JV patches..I have never been in a position to compare them...that may be true.
If you're talking about the JV-1010,the difference is that it has the same soundset as the JV-1080 and 2080,and it has one slot for an expansion card of your choice from the JV-SR series.Plus it has 64 voices of polyphony wheras the older sound canvases only had 24 or 28.Cheers!
I don't know beanz about the JV series, but the the term "soundcanvas" covers a large number of different soundcards and modules...the roland module I use, an M-GS64 module , with 64 voice polyphony, is also referred to as a soundcanvas product..it is actually a rackmount version of the roland SC-88 module...it was manufactured about five years ago.