inputs.text: great upgrade stock - stereo couple months feel know enough review properlyfirst bought head unit read lots reviews reviews made worry gps might poor user interface going unmanageable1 gps works great updated tomtom module installing hu no problems2 not listen people overthetop user interface find snappy responsive no problem menu structure could improved upon yes think could complete pain ass use no actually simple often return \\top\\ menu navigate various screens find design philosophy common sony products \\home\\ screen portal rest device see ps3 sony dvd players psps etc sony product xmbif interested using usb input play music usb flash drive know 16gb music takes 1 2 minutes load feel like longer first time plug might take longer long load time amount music senseme becomes basically useless takes forever load problems choosing 20 30 songs senseme huge waste time reason took star overall ratingthe sound greatanother reason took star cannot siriusxm sirius sound quality sat radio poor although think common sirius receivers buy seperately cannot sat radio hd radio installed time must choose two decide would rather haveoverall great unit happy functionality looks great sounds great nearly everything could want