Ok so I've been a fan of everything games workshop for 20+ years. But I haven't played table top in a very very long time. Some of my friends recently purchased the new 8th edition and are now building deathgaurd and primaris armies. I don't want to be left out. But I also don't want to collect the same. So I'm looking for suggestions for a new army for me to paint and collect. I'm leaning more towards Tau or Necrons but can't decide