想買個gps,哪個比較好

我下個禮拜6要去o'hare airport送人去機場還要去milwaukee看一個朋友，8月份的時候還計劃去東海岸玩一圈。我出去玩一直用yahoo map, I admit sometimes it was stressful to drive and looking at the map at the same time, but it wasn't something i could not handle。但總是覺得要是有個gps的話就會更方便一些，我這些日子一直在看amazon上麵的review, 重點是garmin nuvi760和nuvi680. I guess what bothers me now is some ppl wrote very positive comments, others gave 1 or 2 stars rating on the same product, so I was just a bit confused after reading the comments.
Any suggestions from any1? my price range is under $250

所有跟帖： 

• 回複：想買個gps,哪個比較好 -笑談2008- ♂ (75 bytes) () 05/31/2009 postreply 14:04:50

• garmin最好，我在用tomtom也不錯 -卡加利的海- ♂ (72 bytes) () 05/31/2009 postreply 16:06:27

• 那個便宜買哪個，gps都能指路。 -1800800- ♂ (65 bytes) () 05/31/2009 postreply 19:19:31