Same here. I bought the RCBS prep center and use it on all my brass. I keep "master" cases for quick reset of the trimmer.I've had my RCBS case Prep center as long as I can remember (15-20 yrs) It's very reliable. Not too fast, but way better than doing them by hand.
I have recently replaced the primer pocket cutters and the chamfer & deburring cutters.
I guess this was to be expected after so many cuts.
I would buy this prep center again if it does finally wear out.
M2C