New X-box live gamer tag??

Well I am thnking of getting a new live account.. should i keep my name or change it? if i change it I am thinking of either Jason-Todd327 or Ragdolll-327 two of my favorite comic hmm heros?villins? my current live tag is Kr1min4l if I keep then i just need to renew it maybe when the taxs come in but dunno since heavy into the comic thing think i should change it