I'm really surprised that I hadn't replied to this thread. I grew up in the South Bay area of SF and always saw SP SD9s in Santa Clara yard all the time. Then, I moved up here to Santa Rosa, and saw them again on the NWP. When I was into HO, I always had an Athearn blue box SD9. I'm a big fan of those old Caddys!
SP was the railroad I grew up seeing, I love all the EMD models. But the last ones made are my favorites SD70m