I am pretty set on wanting an Ibanez Prestige RG series guitar, but there's like 10 different ones in the Ibanez Prestige RG line. Is there any severe difference to their quality aside from some being a 7 string, paint job, or H-S-H or just H-H setups, etc? I was going to get a RG1570 because everyone speaks so highly of it. But what is wrong with the others?

*note: Throw price range out the window for now.
same, they have mahogany bodies which i tihnk sounds nicer!!! i am getting the ibanez S520EX which still has a wizard II neck on it!

ESP LTD Viper 400 with EMG 81s
Jackson Dinky DXMG with EMG 81/85
Ashdown Fallen Angel 60 DSP
Ashdown Fallen Angel Cab 120W 4X12
Keeley Modded SD-1 Overdrive
Korg DT-10 Tuner
Noise gate (cheap)
EQ (cheap)