These are all excellent answers but something to keep in mind is cloth condition. Many competitive players on this forum may only play on a Diamond during a tournament. In those conditions, the cloth is usually new which can make the pockets play easier. Poolrooms like Society may only recloth their tables a few times a year, if that. "League cut" will tighten up once the cloth has been worn in.
If this is for a home table, I would probably go with pro cut. Your table will play like new for years and if you get wider pockets, it'll just feel easy. If this is for a poolroom, league cut is the way to go.