There was once I went to sweelee to take a look around a few months back. I've taken an observation on MII RG7321 and compared it to one which is MIK from my memories.... it might just be me, but MII just seems to have better workmanship compared to MIK, altohugh the MIK unit could be semi-lemon or just taken bad care of.
Sub: Oh man, I cant imagine playing on an RG8.... Since you have a high A on your 7 string, I wonder what happen if you put high A and low B on your 8. =P