Resize them to at least 600 so they don't get auto-resized. It looks bad. Otherwise, don't know if the first three will match the theme of the site (dark) even though they're great, but the last one is perfect for sotw.
The size needs to be like they are for the slideshow on the site, and yeah there resizes here just click on the yellow tab to make them to real size. And surprisingly all theses ( well maybe besides the first one) looks really nice on the site actually.
that's mace's entry, jesus. good job mace. On topic; they're all pretty slick KB, 2nd last looks the most badass in my opinion.