I need to give EMC a thumbs up...It isn't a miracle worker....and on certain brands comes up short..not because of the software but the style design of the brand...Yamaha is one of the brands and Ketron has problems too...

What EMC Styleworks does...it gets you to the point you can edit without being an expert in style design..

I have used Styleworks for 15 years...in fact at one time I was the distributor in the USA..

I get great results converting Korg to Roland with a single mod change..the bass..an easy change to do..

Ketron to Roland..I usually have to mute a guitar track...

Yamaha to Roland...the xg selections are terrible..so you need to select new instruments and set all levels...Yamaha seems to be the most inconsistant..

Technics to Roland are also okay...

In fact after conversions...to Roland....Korg and Technics are some of my favorite...There are a few Ketron to Roland styles I use...and none of the Yamaha...not worth my time..I don't really care for Yamaha styles to start....

There are so many great styles from Roland, Korg and Technics...it is not worth the trouble to work with Yamaha and Ketron..

As for SMF to style conversion..again Styleworks gives you a starting point that allows you to fine tune the style..