Manual, I use a Redding.
I've got 2 Lymans and an RCBS, and to me, found the redding the best so far for manual trimmers. Cutter blades seemed to stay sharper longer, and it holds the cases better.
Here's a possible Christmas gift to yourself or let someone get it for you. It's an RCBS 3-way cutter that goes on the TrimPro. It does three steps (trim, deburr, chamfer) in one step. Saves lots of time!