Pros: Trendy gadget
Cons: Trendy gadget
The famous pump mechanism broke after a few energetic uses. The Oxo design has too many parts and pieces which can't be easily disassembled to clean or dry. This will eventually result in mold growth which isn't exactly sanitary.
It's a great gadget until it breaks and more trouble than it's worth to clean. I prefer the Zyliss spinner which has a simpler design. And the hydroponically grown bibb lettuce I use doesn't require washing and drying anyway.
In the professional French kitchen lettuce leaves were often gathered in a clean tea towel with a length of string and spun around in the air. Not a bad technique.