Re: How low is your RG's action?
Which fret is it at 1.6mm?
My 350EXZ(same model only black) has one problem that I'm still trying to figure out: 1st string, 1st fret gets buzz unless I get the action up higher than I like it. My prestiges have fairly low action and yes, they have some buzz, but it doesnt come out through the amp with high gain so it's not a big deal.
And yes, if you want insane low action, there WILL be buzz, it's how much are you willing to deal with and as long as it doesn't effect your sound from your amp, then it doesn't really matter.