This is a personal thing, I know and preferences may differ, but I have a a collection of plastic reels, some Patterson, and ss reels. I much prefer the ss reels for both 35mm and 120 films. In either case, the reels must be dry. I have also had the best (easiest) results by clipping the leading edge corners.

In loading a ss reel, I find that giving the film a gentle tug after a couple of rotations helps center the film width-wise, which aids in alignment. Good center alignment is quite necessary for a correct load. I believe most loading difficulties with ss reels occur due to poor centering of the film at the start. Practice will help in all cases, plastic or ss.