Wanting a Good Password protected Galleries Plugin

I am currently using Image Store, and i love how the plugin is and its features, especially the password protected galleries. However i am always having problems with it, and i really need this feature on my website as i am a photographer and need password protected galleries and gallery in general to work.

Can anyone recommend a gallery plugin that is similar to Image Store, or that has an option for password protection so clients can log in and view their images?