Top of the pops for me like many others is the Carl Angel 5.
(On its side in the photo because I posted this for something else)
It is a Japanese made sturdy metal case, hand cranked helical blade long point sharpener that produces a very long taper hollow grind. If you know what hollow ground means.
The ultra points therefore last and last. I only use it for wood cased graphite pencils where I need such points, and also for hard oil based colour pencils that I use for sharp or point work.
For blocking in points on wood cased graphite pencils, woodless graphite pencils, and softer oil based colour pencils I use either a Koh-I-Noor wooden two stage short taper hand sharpener, (pictured), or the Kum metal similar short taper which has a magnesium blade. The Kum is also available as a long taper sharpener in single or two stage metal hand sharpeners. Kum sharpeners come in different configurations and sizes to suit round/ triangular/giant etc. wood case pencils. These are very very sharp, and can be improved by removing the blade and scraping off the painted coating to re-seat the blade nicely. Kums are are really high quality, and versatile sharpener.
Many people prefer the small hand sharpeners for portability, and because they are easy to see and control during the sharpening for maximum point precision and most of all economy.
The electric or hand cranked whilst effortlessly producing very fine points, are much harder to see during sharpening, and consequently for many tend to really strip down the pencil unnecessarily. And of course aren't quite so portable.