Verizon vs. AT&T in SF Bay Area I'm finally signing up for service! Live in Los Altos (94024, Palo Alto area), travel up to San Francisco, sometimes San Jose. Travel nationally from time to time (CO, TX, MA, NY, DC, etc), so probably getting a national network plan (like ATT's nat'l network or VZ's america's choice). Family has Cingular, but CING has poor reception in our house (0-1 bar). Coverage and clarity are crucial for me. Any tips? CDMA or GSM/TDMA? Thanks!