Really, if you've ever tried to rip off a paper towel with one hand only to end up with 10 feet of unwound paper towels all over your kitchen counter, you'll love this too.  The tension mechanism allows for one-handed paper-towel grabs.  There's another brand that we were considering, but it cost almost twice as much as this one.  We liked them both but chose this because of the price. It was the correct choice - this is a well-made device that will last for years.  

Pros: Reasonably priced, well-made, does what it says.
Cons: None