Bakersfield- I-40 or I-10 to Arizona

I will be pulling from Seattle to The Woodlands TX. in Nov. We usually go I-5 to Bakersfield, Then CA-58/I-40 to Neddles. At Needles we check the NOAA weather site to see about the Weather. As to your question IMHO I-40 is more scenic until you get past the Continental Divide Then it"s pretty flat to rolling hills. I-10 is flat to rolling hills from the CA. border to Houston. If you decide to drop down to 10 at Needles take AZ-95 instead US-95. US-95 is about 90 mi. of nothing, AZ-95 is a pretty drive along Colorado River to Parker where you can take AZ-72 to Vicksburg Jct. and on to I-10. We went this way last year but went straight on 95 to Quartsize and picked up I-10.From Parker, AZ-95 to I-10 is an easy drive but not much to see. We haven't done much site seeing along these routes because of time constraints. I would recommend Orange Grove Rv PK in Bakersfield. Message me if you want more info. Have a great trip, Be Safe...John