I ride mostly SoCal and sadly, the tracks here don't compare to Barber or Miller, both of which I have not ridden.
In any event, my faves that I have ridden:
1. Zhu Hai Int'l Circuit - same architect who designed Shanghai, FIM spec GP track
2. California Speedway - big drop in track standard from #1 but very safe track
3. Laguna Seca - felt too narrow for a world spec track, facilities not up to par
4. Buttonwillow - some fun elevation changes
I also have ridden Las Vegas Motorspeedway, Willow Springs, and Streets of Willow but I have no love for those tracks. LVMS and SOW are glorified go-kart tracks while WSIR is just flat out dangerous.