I don't know about San Diego but I'm about 30 miles from Los Angeles. I did a speed test on a Charge at the Verizon store in the mall and with 1 bar it was getting 15mbps down. I don't remember what the up speed was.
Inside work my 3g is spotty. Guy 1 cube over from me has a T-bolt and is getting 12mb down 3mb up at work. He told me around Detroit he gets 30 MB download speeds sometimes. I live and work in Michigan. N by NW of Detroit.