我用过一些GPS，也来聊聊我的使用感觉：
1：Dell Axim Handheld X5 + Pharos CF GPS + TOMTOM 3
Pros: Cheap, Flexible
Cons: Need to charge Haldhelds during driving + GPS adapter needs to face
sky all the time + Slow start
2: Dell Axim Handheld X50 + Pharos Bluetooth GPS + TOMTOM 5
Pros: Good Image + No wires between GPS and Handheld + Great Software
Cons: BT GPS only holds 4-5 hrs + Handheld needs to charge during long
driving + Needs to face sky!
3: Garmin StreetPilot C320 and C330
Pros: Fast start + Battery life is g
