I've been using a F A trim and prep center like that and have not had any negative issues with it.One thing it has taught me is,I can tell when brass is getting hard and it needs to be annealed.The trimmer works great when the brass is soft,but once it starts getting hard,you can hear it when trimming and often start getting chatter too.It takes a little more time to trim the brass when it's hard.Another thing I do is,I full length resize my brass,then I trim,deburr,chamfer and clean the primer pockets.After that I put them in the tumbler to clean them up and remove any lube.Once I have my trimmer set for the cartridge I'm loading,I quit measuring each individual case.I just make the trimming a part of my case prep everytime after resizing the brass.Doing it this way trimming after each time it's fired and resized,is very minimal,more like just a touch up and keeps all your brass at a consistent length.Another thing that helps is,keep your brass segregated by the number of times fired.I write on each case with a sharpie to keep track of that.I now work with smaller batches of brass as opposed to a bunch of random mixture of brass of unknown firing,brass hardness and lengths.It just makes things better in the long run and if I start seeing multiple cases showing any signs of case failure,I know it's time to get rid of that brass.