Eagle Rider and Las Vegas Harley-Davidson are both safe to rent from and you won't go wrong with either. LVHD runs a shuttle to and from the Strip so it could save you some transportation costs. My only suggestion is to make up your mind now and get it reserved. This is Vegas and lots of people rent here, so your choice in bikes goes down every day as you get closer to your date.

(Shameless plug) Check my blog below for ride ideas while here.