Similar to others, I've had an excellent experience with it. The Chrome plugin is a bit sub-par, but it's still in development, and does fill passwords reliably. Capturing doesn't always work, however - a guaranteed way to save a password is to use Safari / WebKit (never had a problem with the webkit nightlies) / Firefox, which all have more "full" plugin capabilities, and mature plugins.

My personal favorite feature: the keychain-package is just a folder / bundle, and it contains a website... which is capable of decrypting your passwords, given your master password. Which means you can recover your passwords without the application, on any machine with a web browser. Including through the Dropbox web interface, without needing to download it locally.

Go for it, they've made an excellent product.