best route from LV to PHX?

[lerxst337]

I apologize in advance for posting this here, but I know many of the posters here live in Vegas, and may be able to provide the best advice. Mods, feel free to move this if you must--I was just a little scared of OOT!

I am driving from Vegas to Phoenix for the OSU-UF game on Monday, and I am receiving conflicting advice from mapquest and others to take US-93 (to US 60) all the way, or to take I-40 to I-17. My hotel is very near the intersection of US 60 and I-17, so there is no difference as to end point. I am not concerned about sightseeing, only speed and ease of travel. We will be driving early morning, and should arrive in Phoenix before noon. Obviously, traffic is a concern (does US-60 ever get jammed up outside of PHX, etc).

Thanks in advance for your help.