These patch cords work great. Flexible for a smooth transition to the equipment and a solid lock in connection. So solid sometimes they are difficult to remove. I actually take a small technical flat blade screwdriver and insert because the tab doesn't always release. I will take that over the cable coming out too easy for a false connection.
My cables did not arrive "greasy" as others have mentioned. The cable end molding seemed solid enough, and the tab protector was easy to push down in most cases. All-in-all a good cable for the money. We installed around 100 of these cables with zero bad cables in the bunch.
PROS: -Not one faulty cable out of 100 -Solid Molding -Flexboot is easy to push down, or move out of the way if necessary
CONS: -I ordered purple cables and the color wasn't as vibrant as I expected