I really like Xee - fast, slick interface, beats the pants of Prevew.

2 features that I think would enhance it mightily:

1. A browser window, so you can see the contents of a directory (a la acdsee and irfanview) -- a "thumbnail/preview option".
2. Support for PDF, as I'm not impressed at all by Preview's handling of PDFs.

thanks for great software!

Dogs