Instruct: Classify a given Amazon review as either positive or negative.
Query: X-Acto is an inferior sharpener

I have been trying a number of battery powered sharpeners since my Panasonic pooped out (their latest ones make a wedge type point that dulls quickly and I've given them away.) The best I have found is the Derwent which not only handles different sized pencils, but has point sharpness adjustments and also a more tapered profile is available, which I like the best.