Re: RGT320QRBB vs RG8470F
8470 all the way, simply a better guitar. Better frets, pickups, inlays, upper fret access...
The differences between the 8270 and 8470 are that the 8470 has neck binding, what looks like pearloid vine stems, and a matching headstock. 8270 has no neck binding, normal stem and ebony headstock veneer. Also, the 8470 neck is 1mm thinner than the 8270.
Its pretty much the same thing though, just minor visual tweaks and a slightly different neck. You can't go wrong with either. I went for the 8270 because I found one real cheap on ishibashi, but I would be just as happy with an 8470