i just bought two dimarzio pots for 5 bucks a pop at guitar center. they didn't have them in stock, so i had to pay shipping, which didn't really matter since i also bought a jack and a 5-way switch.

 

I bought a low noise conductive plastic pot at digikey.com. It's made by Bourns and they call it Model 95. It's $13, but it's probably the lowest noise pot you'll find, and it's designed specifically for the guitar (100000 cycles rotational life). If anyone wants one in their RG, you need to know that you'll have to enlarge the hole by a hair in order to install it, and you need a knurled shaft model, because standard Ibanez knobs don't fit on a solid shaft ones. Once installed, the pot is smooth as butter with a wee bit less resistance than the stock RG3120 pot.