it really depends on what you lack. For me personally, DM helps get multikill potential. going 1for1 can be good, going 2for1 or even 3for1 is great, that significantly changes how the round is played. If you hold the site and you get 2 before dying, your team is in a 4v3. If you are entrying the site and trade your teammate out and get one more frag on top of that, that's a 4v3 site hold again.