What GPS powers up the best with no hassel? What brand has the capability to store a a lot of information? Is hard drive storage a must or not? Do you recommend the use of a bluetooth? What about a battery vs. car adapter? What about voice activation? What experiences can you share with me about your purchase of a GPS system? Good or Bad... And what qualities It definitly should have before I make a purchase. My budget is between 500-700 dollars. The primary use is to use with a automobile. For family vacations and daily driving. There are so many choices I need your advice!!