The RGA guitars have the Prestige Wizard neck which is thinner than the Wizard II. I have two guitars with a Wizard II neck and I thought they were awesome until I played the Wizard Prestige neck. If you go to a music store and play any prestige Ibanez guitar RG (RG1570, RG25xxx, RG3xxx) then you will know what the neck will feel like because they have the exact same dimensions.
I think that an RGA would be great for you if you are looking for a premium Ibanez instrument without features that you won't need like a floating trem. I really wanted one for myself but the RGA321 is about 1000 bucks out of my price range. I wouldn't worry too much about the changing the pickups if you get the RGA321 because it comes with Dimarzio pickups. Some people like them and some people don't, but you can at least give them a good workout before you decide to make any pickup changing decisions.
I think that an RGA would be great for you if you are looking for a premium Ibanez instrument without features that you won't need like a floating trem. I really wanted one for myself but the RGA321 is about 1000 bucks out of my price range. I wouldn't worry too much about the changing the pickups if you get the RGA321 because it comes with Dimarzio pickups. Some people like them and some people don't, but you can at least give them a good workout before you decide to make any pickup changing decisions.