I saw this thing in The Big Bang Theory for the first time like many people and wanted to buy one for my boyfriend's birthday. I looked around Amazon and I wasn't sure which to buy, since there are many... In the end I got this one, and while I can't say whether the other ones are good or not (I bet many are!), I can say this one is perfect!
When it arrived I found it so easy to use that I bought a second one for myself. It's really useful.
If you can fold clothes just fine, you might not find any use for it, it might take you longer. However, if you are like me and your shirts always look awful when you fold them, this is definitely going to help you even if it takes slightly longer than folding with your hands.