The second one looks slightly better as there is a border/glow around 'Fill'. I think you should try and add more effects like you did with 'Pixel' at the top. Overall, they looks really good
yeah...they look more proffessional, but i am currently using the second one on my site...might change it later
The stroke effect is not a veyr good idea with the style you have going there. A glow could possibly work. A nice drop shadow could also work well if you're not using a black background. I'd say the 3rd image is best.