For a relatively low budget alternative, I use Lyman's Universal Trimmer. One collet for all cartridges and it comes with multiple pilot tips. Need the carbide cutter. I got the power adapter and use a cordless electric drill. I wouldn't use this approach for 500 case batches, but it's fine for 50-100. Concentricity probably doesn't meet bench rest standards but I can get 1 MOA groups out of my M1A.
RCBS TrimMate takes care of de-burring, chamfering, cleaning primer pockets and uniforming flash holes (only once for that step and I use a Lyman flash hole uniformer shaft).