Pff. Save your money on the over-priced and expensive stuff. More marketing than substance.
Steel cup is the way to go. It's actually a lot more comfortable than you would think, all but indestructible, and you'll never need to buy another one. About $30 if I remember right.
Or you could just get a Nutty Buddy.
YouTube - The Nutty Buddy
Athletic Cup Supporters Protective Mens Safety Equipment