I've been training in martial arts for quite some time now and I want to make the progression to weapons and I am wondering what type of art is the most effective and beneficial.

I'm looking for an art that will train my focus and patience further, so that I can enhance my awarness of attacks and the space around me when I fight. I've heard of kendo, but i'm not sure of what it incoorperates. Those that actually know from experience or in depth research, your responses will be valued greatly. Thanks.