How you'll feel about this mouse will depend on what you value the most. If you want a cheap, quiet and thin mouse that won't add much bulk in your laptop case, this is a great pickup. On top of that, it's worked on every surface I've tried it on.
On the other hand, its thinness comes at the price of ergonomics. It's not as good of a fit in your hand as the thicker mice are but I knew that going in. And as a couple of reviewers have mentioned, it does feel cheap - mostly due to it being lightweight.
Overall though, the pluses outweigh the minuses and it's a functional mouse in a very thin form factor. Thumbs up.