Me, I love my Sinclair/LE Wilson Stainless Ultimate Case trimmer. Repeatable 99.9% of the time and dead up accurate. The down side is, I'm cheap and I hadn't bought the drill attachment yet, After 5 years of owning it.
The Carbide cutter makes trimming a breeze, Really no need for the drill, I can rip through a 100 cases in no time.
I preferer to chamfer and deburr by hand on my precision rifle cases. I find that some trimmers that preform all functions to be to aggressive or not aggressive enough in that department. I want a very light non aggressive
smooth bevel surface, not a 60* sharp as a knife bevel. That can cause neck tension issues , and leads to brass shortening quicker over multiple firings. There are some good units out there that are powered like Giraud, and Henderson. But get ready to open that wallet up. I'm just shy $300.00 on my set up, 5 years ago.
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