Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Best DECT6.0; renders 5.8gHz obsolete!

We'd looked long and hard at the latest 5.8gHz Unidens (TRU9300 and TRU9400) and Panasonic (6000 series) and hadn't been exactly overwhelmed by the range and voice quality. Battery life was a joke.The we heard about the new Panasonic DECT 6.0 phones. In a word: WOW! Dramatically better range, sound quality, and rated talk time than any of the 5.8ghz phones. Uses 2 ordinary AAA NiMH's. Plus the features of the DECT 6.0 standard itself.