Well you got your regular RG series and then...the rest.All the series of ibanezez have there prestige models...better woods,trems/tails,pickups,hardware e.c.t.

The high end of the regular RG series is the 570...if your looking for a real performer then go for a Prestige RG(like a 3120)

Go to guitartrader.com and check their Ibanez selection to get an idea of what to look for on ebay.