Wow, these are some professional works right there! Kudos! I especially likes the clear logos, clean and smooth!
I've also been trying to make clear logos myself with GIMP lately, but the outlines always end up jagged or crooked. I've been able to cover up the flaws somewhat with a simple glow effect and scaling up then scaling down the logo liberally. But deep down I can't shake the feeling that it's a cheap trick and there ought to be better ways to do it, right?
So eh... what I'm trying to say is, are there some pointers for making better clear logos? Or recommended reads?
Thank you very much!