You are well behind what is commonly known as the "Redwood Curtain!" I could Never
get reception up in your area no matter what. A colleague of mine and I were in Fortuna and Eureka not that long ago and had different cell plans and neither of us got service until we jumped over into Redding. Big jump I know! I'm surprised you get anything up there at all! It's like no man's land for cell phones.
If it helps, I know that ALL of FedEx employees are switching to Blackberry's with Sprint as their cell carrier. And these folks call a LOT! Just my
Personally, I have had Verizon before and was very satisfied.
Not much help, am I?