Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great GPS unit could use minor software tweak

This is an absolulty great unit that offers a ton of features for the price when comapred to units form Garmin, Magellan, and TomTom. The screen is crystal clear and huge and being that it runs on Windows you can play videos, mp3's, etc... on it. The only complaint is the interface is not as intutive as units from Garmin or Lowerance. It takes a little bit of 'playing' to figure it out. Found my c520 here: www.gear5.com