About 95% of my decision to change out my bars was just for a different look.
I'm fairly tall the little extra reach is a tad more comfortable, but I can't say that I've noticed much change in the handling department.
I think the Renthal UL are 1 1/2" wider on each side than stock, correct me if I'm wrong someone?
I ended up cutting 1 1/4" off, which I thought was a pain in the a$$, but not overally difficult, especially if you had the right tools. I bought what I thought was a decent larger pipe cutter, but ended up getting out the good old dremal tool to finish things off.