CactuarJoe's are cool, but #2 would probably be way too big and intrusive.. his #3 is really cool though.
Cartoons' looks more like an actual magazine title though. I personally think it would be cool if the "o" was yellow like it is on Koffing's stomach (while keeping the rest of the letters purple of course). Also think the o looks better uneven from the rest of the letters. It's like that trendy lowercase i stuff that apple and many others do.
Edit: Also for cartoons, the S is cool looking and all, but there's something about it that is bothering me... Is it thicker on top than on bottom? If my eyes aren't deceiving me, is there a way you could possibly make it more symmetrical?