Does anyone know how to change icon in go launcher? or is it only available in the go launcher ex version?
what do you guys suggest on a great launcher that can customize the icons that doesnt eat up alot of battery and ram but still can give enough room for customizing the feel and look
I think you are already using GO Launcher EX (which is totally free).
If you are referring to the icons in the dock, then to change the icon, just tap and hold then select "replace icon". You can also download GO Launcher themes and apply them to change the icons look and feel.
I think GO Launcher EX is a quite decent and fully customizable, but if you prefer launchers similar to stock ICS, then try Apex launcher (free).
I wouldn't worry at all about ram or performance, as Galaxy S3 is more than capable for such simple tasks.