Instruct: Classify Amazon reviews into positive or negative sentiment
Query: 4/5 for first detector bought

First off, I got the xrs 9930 for $130 through amazon, which was more than 20% cheaper than other sites, thanks amazon :). Secondly, the detector itself is a 4/5, it detects city cops very well a 5/5 for that. But for Highway usage it doesnt catch it as soon as it should. This was my first detector and i am satisfied with it overall. The color screen is awesome, all my friends are impressed with it. The intellimute works brilliantly, and compass helps a lot. A tip though- turn off the X band in city driving, my detector goes off and every other traffic light (which I know it is supposed to) but it gets annoying.