I own an Arbiter and love it! I think it's very comfortable for spins and can be used well with either a single handed or two handed grip. I haven't dueled with it yet so I can't give any opinion there, but many people who have seem to think it works rather well.
While I don't personally own a Consular, I did buy one for my nephew and gave it a few quick spins and swings before sending it off to him. I think it is the shortest hilt SF makes if I'm not mistaken, so it's good if you have small hands or like using mainly a single handed grip. I did find it very comfortable for the short time I used it.
I think either way you'll be happy, it really does come down to personal preference. Let the Force guide you and you won't go wrong.