HI bluekoala,
This answer comes from my wonderful husband, Mr.se4/)*
Not much. The difference between the C-1 plus and the hellraiser except for EMG and tremolo.
Also slightly bigger frets on hellraiser. Jumbo verses x/ Jumbo and inlays.
C-1 special has 22 frets and dot inlays. both are great for the money,
I own 1 of each.