street pilot 7200 (just sold my c530)


well just sold my garmin c-530,laid out 650.00 for the street pilot 7200 and had to buy external attena to pick-up sat.the 530 picked up all 12 sat without ext antenna,has anyone else had this problem,seems i will be spending more money for that SPECIAL ANTENNA to pickup road cond,weather etc,another 200.00