Water Resistant Heated Mattress Pad

We've used these for a little over 2 years now. We have a split king, so we are using 2 twin-sized heated mattress pads. The issues that we have: 1-It is sometimes hit or miss if it actually warms the bed. Y9u can't pick your favorite number, because it often changes from night to night. 2-Our biggest problem with it is that the plug is right at your feet. I had to make a quilted pad to go over them just so it wasn't hurting us. Worst design ever! 3-The timer function stays on even after it's supposed to be shut off. It flashes that it's done, but still stays warm Pros: 1-It stays in place. 2-It is a soft material, and not scratchy. 3-It's washable.