2 couples driving from Albuquerque to Las Vegas with a stop-over at the Grand Canyon. I've done this trip before but was thinking of changing it up a little. Last time (5 years) I took I-40 to 180 to 64 to the Canyon. This time we're considering takeing I-40 to 89 to 64 and coming in the East entrance. We're staying in Tuscayan. Anyone have any ideas? Preferences? Reasons NOT to take east entrance route? Any feedback would be appreciated.