Which airsoft gun should i get the 2011 jg m4 s-system enhanced version 400 to 450 fps or 2011 dboys m4 s-syst?

2011 jg m4 s-system enhanced version 400 to 450 fps or 2011 dboys m4 s -system 350 to 390 fps but I'm thinking about getting the dboys cuz it is full metal but idk which one do you prefer for airsoft wars