Re: Notation Software, "Cantabile" VST host and more.
It depends... as you might quickly want more features like recording because you can't simple use external tools for that except via introducing more technology like ReWire or similar tailored for audio...
However, just for playback it might be great to use better SF2 directly or even for practicing and performance as well if output is ASIO based to get low latencies.
I lately checked out the latest version 12 "LiveStyler" - a program emulating an arranger keyboard - which now supports direct SF2 playback on ASIO drivers too and makes the thing now finally a from scratch usable no brainer even without special HW.
...and keep on jamming... :p