Rukia vs Ichigo

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Hi guys, I'm new to this stuff so if I've done anything wrong forgive me.

However I wanted to know who is better rukia or ichigo?
I'm lvl 56 and I really like ichigo's ability which attack's assaulter's and keeps his rage up all the time.
I'm debating on rukia since she keeps her rage up all the time however she doesn't attack assaullters. She does also add +40 fury to my assaulters.

I'm trying to find a balance for this since ichigo seems to be good in both pvp/pve
People are saying rukia is only good for pve.

So could someone give some good reasons as to who I should keep.
My team members include my main character, orihime, sado and renji.