Best route from Santa Rosa, Ca. to PHX

Thanks everyone!!

I made almost the same trip many times but I went from Santa Rosa to Lake Havasu. I took US101 to Lakeville Hwy at Petaluma to CA37 to I-80 west, I-780 east, I-580 east, I-5 south, CA58 east, I-40 east. Either US95 south at Needles or AZ95 south through Havasu to I-10 east. I tried many different routes to get around the east bay traffic but this was the "simplest".

Sorry...yes simplest!
Thanks

Guess that depends on your definition of "best". Simplest: US-101 -> I-580 -> I-5 -> I-210 -> I-10. To avoid the LA nightmare: US-101 -> I-580 -> I-5 -> CA-58 @ Bakersfield -> I-40 @ Barstow -> US-95 @ Needles -> I-10.