Hi Don,
Songs should work okay, as apart from some sounds in higher banks, I believe the patch setup in the SD5 is the same as the SD1 and 1+.
I owned the 1+. The only styles I had to convert were the MS series. All others worked okay. Slightly different sounding, but they still worked.
Which bonus styles are you talking about? I think I still have the sd1+ bonus folder somewhere..
Dennis