Thanks again Raze! I just found that you can get a demo for each of them on LIVE. So I downloaded DKS and have been playing it tonight. Seems like they've removed the aiming mechanic (left trigger) from ED and the colors seem more saturated. The menus look a lot better on DKS(more color and you can tell which upgrades are currently unavailable much easier). Seems like perhaps the XP per level has gone down a bit? I think I'll stick with ED for now.