I sell quite a few power trimmers and my personal fav is the
TrimPro Rotor, inexpensive and does a great jib. I use the leather fingers in mine. Most people make a few common mistakes when using trimmers,
Load too much, this causes the buds to go round and round for too long, this causes bruising, just add a handful to start, it will trim it up fast, 15 to 20 seconds and mine are done. Putting in too much causes bruising!
Leave too many large leaves on does the same thing ^^^^^^^. Trim off all the big stuff.
Make sure you read the instructions and make sure it is adjusted right, and get the blade not the wires, if available for your machine.
I have used it to trim cured buds also and it works find for that. Just needs about 3 rotations to be done.