i am a Post Processing fan. for me... the tool and medium is totally irrelevant. the finished product is what i care about. as far as 'reproducability in various sizes' it depends on what you do in post processing. if you do purely procedural postwork, then it is duplicatable. if you do hand painting and cut/copy/paste then probably not. i know that my work makes most purists cringe... i make the 3d render folks crazy and the fractal-ites... since both groups tend to think it's 'unholy' or somehow cheating, to mess with what the computer creates in it's initial 'render'. hehe, me, i kinda like making folks cringe