Instruct: Classify a review into positive or negative sentiment.
Query: Good Quality and Long Lasting

I'm a sound technician and use the Duracell ProCell for wireless mics, wireless in ear monitors, and guitars/direct boxes/etc. I've tried different brands and the ProCell lasts the longest in my opinion. I sometimes find them cheaper, but with Amazon's free shipping this makes them the best deal as other online stores charge a lot for the shipping because of weight. Because of my satisfaction with the ProCells, I also use them at home for smoke detectors and electronic door locks.